1011010211020 has 24 divisors (see below), whose sum is σ = 2123236965024. Its totient is φ = 404382080256.

The previous prime is 1011010211009. The next prime is 1011010211023. The reversal of 1011010211020 is 201120101101.

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 = 1011010210988 and 1011010211006.

It is not an unprimeable number, because it can be changed into a prime (1011010211023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 995949 + ... + 1736068.

It is an arithmetic number, because the mean of its divisors is an integer number (88468206876).

Almost surely, 2^{1011010211020} is an apocalyptic number.

1011010211020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011010211020 is an abundant number, since it is smaller than the sum of its proper divisors (1112226754004).

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

1011010211020 is a wasteful number, since it uses less digits than its factorization.

1011010211020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2750529 (or 2750527 counting only the distinct ones).

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

Adding to 1011010211020 its reverse (201120101101), we get a palindrome (1212130312121).

The spelling of 1011010211020 in words is "one trillion, eleven billion, ten million, two hundred eleven thousand, twenty".