21121201122 has 32 divisors (see below), whose sum is σ = 48284801664. Its totient is φ = 6033657600.

The previous prime is 21121201109. The next prime is 21121201151. The reversal of 21121201122 is 22110212112.

It is a super-2 number, since 2×21121201122² (a number of 21 digits) contains 22 as substring.

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, 247722 + ... + 321882.

It is an arithmetic number, because the mean of its divisors is an integer number (1508900052).

Almost surely, 2^21121201122 is an apocalyptic number.

21121201122 is an abundant number, since it is smaller than the sum of its proper divisors (27163600542).

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

21121201122 is a wasteful number, since it uses less digits than its factorization.

21121201122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80954.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21121201122 its reverse (22110212112), we get a palindrome (43231413234).

The spelling of 21121201122 in words is "twenty-one billion, one hundred twenty-one million, two hundred one thousand, one hundred twenty-two".