10121111222020 has 12 divisors (see below), whose sum is σ = 21254333566284. Its totient is φ = 4048444488800.

The previous prime is 10121111221939. The next prime is 10121111222051. The reversal of 10121111222020 is 2022211112101.

It can be written as a sum of positive squares in 2 ways, for example, as 7143132856896 + 2977978365124 = 2672664^2 + 1725682^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10121111221985 and 10121111222003.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253027780531 + ... + 253027780570.

It is an arithmetic number, because the mean of its divisors is an integer number (1771194463857).

Almost surely, 2^{10121111222020} is an apocalyptic number.

10121111222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10121111222020 is an abundant number, since it is smaller than the sum of its proper divisors (11133222344264).

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

10121111222020 is a wasteful number, since it uses less digits than its factorization.

10121111222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506055561110 (or 506055561108 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 10121111222020 its reverse (2022211112101), we get a palindrome (12143322334121).

The spelling of 10121111222020 in words is "ten trillion, one hundred twenty-one billion, one hundred eleven million, two hundred twenty-two thousand, twenty".