2121202022122 has 16 divisors (see below), whose sum is σ = 3186297986112. Its totient is φ = 1059103203840.

The previous prime is 2121202022117. The next prime is 2121202022123. The reversal of 2121202022122 is 2212202021212.

It is a self number, because there is not a number n which added to its sum of digits gives 2121202022122.

It is not an unprimeable number, because it can be changed into a prime (2121202022123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8386858 + ... + 8636074.

It is an arithmetic number, because the mean of its divisors is an integer number (199143624132).

Almost surely, 2^{2121202022122} is an apocalyptic number.

2121202022122 is a deficient number, since it is larger than the sum of its proper divisors (1065095963990).

2121202022122 is a wasteful number, since it uses less digits than its factorization.

2121202022122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255213.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 2121202022122 its reverse (2212202021212), we get a palindrome (4333404043334).

The spelling of 2121202022122 in words is "two trillion, one hundred twenty-one billion, two hundred two million, twenty-two thousand, one hundred twenty-two".