1011210110020 has 96 divisors (see below), whose sum is σ = 2381855196672. Its totient is φ = 357419520000.

The previous prime is 1011210110017. The next prime is 1011210110023. The reversal of 1011210110020 is 200110121101.

It is an interprime number because it is at equal distance from previous prime (1011210110017) and next prime (1011210110023).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1011210109979 and 1011210110006.

It is not an unprimeable number, because it can be changed into a prime (1011210110023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2237580 + ... + 2651260.

It is an arithmetic number, because the mean of its divisors is an integer number (24810991632).

Almost surely, 2^{1011210110020} is an apocalyptic number.

1011210110020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1011210110020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1190927598336).

1011210110020 is an abundant number, since it is smaller than the sum of its proper divisors (1370645086652).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1011210110020 is a wasteful number, since it uses less digits than its factorization.

1011210110020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414013 (or 414011 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1011210110020 its reverse (200110121101), we get a palindrome (1211320231121).

It can be divided in two parts, 101 and 1210110020, that added together give a palindrome (1210110121).

The spelling of 1011210110020 in words is "one trillion, eleven billion, two hundred ten million, one hundred ten thousand, twenty".