202001021120121 has 32 divisors (see below), whose sum is σ = 270601388736000. Its totient is φ = 134035943678208.

The previous prime is 202001021120081. The next prime is 202001021120147. The reversal of 202001021120121 is 121021120100202.

It is not a de Polignac number, because 202001021120121 - 2¹⁷ = 202001020989049 is a prime.

It is a super-2 number, since 2×202001021120121² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 202001021120121.

It is not an unprimeable number, because it can be changed into a prime (202001021120321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 834149185 + ... + 834391313.

It is an arithmetic number, because the mean of its divisors is an integer number (8456293398000).

Almost surely, 2^{202001021120121} is an apocalyptic number.

It is an amenable number.

202001021120121 is a deficient number, since it is larger than the sum of its proper divisors (68600367615879).

202001021120121 is a wasteful number, since it uses less digits than its factorization.

202001021120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244133.

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

Adding to 202001021120121 its reverse (121021120100202), we get a palindrome (323022141220323).

The spelling of 202001021120121 in words is "two hundred two trillion, one billion, twenty-one million, one hundred twenty thousand, one hundred twenty-one".