2121011101012 has 24 divisors (see below), whose sum is σ = 3861212695200. Its totient is φ = 1018216068576.

The previous prime is 2121011100931. The next prime is 2121011101021. The reversal of 2121011101012 is 2101011101212.

It is a happy number.

It is a super-2 number, since 2×2121011101012² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2121011100983 and 2121011101001.

It is a congruent number.

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, 51053478 + ... + 51095005.

It is an arithmetic number, because the mean of its divisors is an integer number (160883862300).

Almost surely, 2^{2121011101012} is an apocalyptic number.

It is an amenable number.

2121011101012 is a deficient number, since it is larger than the sum of its proper divisors (1740201594188).

2121011101012 is a wasteful number, since it uses less digits than its factorization.

2121011101012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102148695 (or 102148693 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 2121011101012 its reverse (2101011101212), we get a palindrome (4222022202224).

The spelling of 2121011101012 in words is "two trillion, one hundred twenty-one billion, eleven million, one hundred one thousand, twelve".