1011012210020 has 48 divisors (see below), whose sum is σ = 2127618118080. Its totient is φ = 403549497216.

The previous prime is 1011012209989. The next prime is 1011012210049. The reversal of 1011012210020 is 200122101101.

It is a junction number, because it is equal to n+sod(n) for n = 1011012209983 and 1011012210010.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99710111 + ... + 99720249.

It is an arithmetic number, because the mean of its divisors is an integer number (44325377460).

Almost surely, 2^{1011012210020} is an apocalyptic number.

1011012210020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011012210020 is an abundant number, since it is smaller than the sum of its proper divisors (1116605908060).

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

1011012210020 is a wasteful number, since it uses less digits than its factorization.

1011012210020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20204 (or 20202 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1011012210020 its reverse (200122101101), we get a palindrome (1211134311121).

The spelling of 1011012210020 in words is "one trillion, eleven billion, twelve million, two hundred ten thousand, twenty".