202111012121001 has 32 divisors (see below), whose sum is σ = 284044897704960. Its totient is φ = 127477993363776.

The previous prime is 202111012120987. The next prime is 202111012121119. The reversal of 202111012121001 is 100121210111202.

It is a happy number.

202111012121001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 202111012121001 - 2⁷ = 202111012120873 is a prime.

It is a super-2 number, since 2×202111012121001² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (202111012122001) 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, 189853135 + ... + 190914731.

It is an arithmetic number, because the mean of its divisors is an integer number (8876403053280).

Almost surely, 2^{202111012121001} is an apocalyptic number.

It is an amenable number.

202111012121001 is a deficient number, since it is larger than the sum of its proper divisors (81933885583959).

202111012121001 is a wasteful number, since it uses less digits than its factorization.

202111012121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066093.

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

Adding to 202111012121001 its reverse (100121210111202), we get a palindrome (302232222232203).

The spelling of 202111012121001 in words is "two hundred two trillion, one hundred eleven billion, twelve million, one hundred twenty-one thousand, one".