2121011211012 has 48 divisors (see below), whose sum is σ = 4953250283520. Its totient is φ = 706400565408.

The previous prime is 2121011210957. The next prime is 2121011211041. The reversal of 2121011211012 is 2101121101212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2121011210982 and 2121011211000.

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, 72072133 + ... + 72101555.

It is an arithmetic number, because the mean of its divisors is an integer number (103192714240).

Almost surely, 2^{2121011211012} is an apocalyptic number.

It is an amenable number.

2121011211012 is an abundant number, since it is smaller than the sum of its proper divisors (2832239072508).

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

2121011211012 is a wasteful number, since it uses less digits than its factorization.

2121011211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34352 (or 34350 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2121011211012 its reverse (2101121101212), we get a palindrome (4222132312224).

The spelling of 2121011211012 in words is "two trillion, one hundred twenty-one billion, eleven million, two hundred eleven thousand, twelve".