202001211011121 has 32 divisors (see below), whose sum is σ = 272292520132608. Its totient is φ = 133195757365440.

The previous prime is 202001211011101. The next prime is 202001211011147. The reversal of 202001211011121 is 121110112100202.

It is a happy number.

It is not a de Polignac number, because 202001211011121 - 2¹⁰ = 202001211010097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202001211011121.

It is not an unprimeable number, because it can be changed into a prime (202001211011101) 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, 191223331 + ... + 192276791.

It is an arithmetic number, because the mean of its divisors is an integer number (8509141254144).

Almost surely, 2^{202001211011121} is an apocalyptic number.

It is an amenable number.

202001211011121 is a deficient number, since it is larger than the sum of its proper divisors (70291309121487).

202001211011121 is a wasteful number, since it uses less digits than its factorization.

202001211011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055141.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 202001211011121 its reverse (121110112100202), we get a palindrome (323111323111323).

The spelling of 202001211011121 in words is "two hundred two trillion, one billion, two hundred eleven million, eleven thousand, one hundred twenty-one".