1021200211012 has 24 divisors (see below), whose sum is σ = 1806363024480. Its totient is φ = 505122636480.

The previous prime is 1021200211001. The next prime is 1021200211069. The reversal of 1021200211012 is 2101120021201.

It is a junction number, because it is equal to n+sod(n) for n = 1021200210983 and 1021200211001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3111898 + ... + 3424369.

It is an arithmetic number, because the mean of its divisors is an integer number (75265126020).

Almost surely, 2^{1021200211012} is an apocalyptic number.

It is an amenable number.

1021200211012 is a deficient number, since it is larger than the sum of its proper divisors (785162813468).

1021200211012 is a wasteful number, since it uses less digits than its factorization.

1021200211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6536691 (or 6536689 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1021200211012 its reverse (2101120021201), we get a palindrome (3122320232213).

The spelling of 1021200211012 in words is "one trillion, twenty-one billion, two hundred million, two hundred eleven thousand, twelve".