201121020122 has 16 divisors (see below), whose sum is σ = 330945717600. Its totient is φ = 90907925040.

The previous prime is 201121020109. The next prime is 201121020227. The reversal of 201121020122 is 221020121102.

It is a junction number, because it is equal to n+sod(n) for n = 201121020097 and 201121020106.

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, 25531997 + ... + 25539872.

It is an arithmetic number, because the mean of its divisors is an integer number (20684107350).

Almost surely, 2^201121020122 is an apocalyptic number.

201121020122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

201121020122 is a deficient number, since it is larger than the sum of its proper divisors (129824697478).

201121020122 is a wasteful number, since it uses less digits than its factorization.

201121020122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51072061.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 201121020122 its reverse (221020121102), we get a palindrome (422141141224).

The spelling of 201121020122 in words is "two hundred one billion, one hundred twenty-one million, twenty thousand, one hundred twenty-two".