202193753121081 has 16 divisors (see below), whose sum is σ = 317166671563200. Its totient is φ = 126866668624704.

The previous prime is 202193753121001. The next prime is 202193753121091. The reversal of 202193753121081 is 180121357391202.

202193753121081 is a `hidden beast` number, since 2 + 0 + 2 + 1 + 9 + 3 + 7 + 531 + 2 + 108 + 1 = 666.

It is not a de Polignac number, because 202193753121081 - 2¹⁹ = 202193752596793 is a prime.

It is a super-2 number, since 2×202193753121081² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (202193753121001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220254632571 + ... + 220254633488.

It is an arithmetic number, because the mean of its divisors is an integer number (19822916972700).

Almost surely, 2^{202193753121081} is an apocalyptic number.

It is an amenable number.

202193753121081 is a deficient number, since it is larger than the sum of its proper divisors (114972918442119).

202193753121081 is a wasteful number, since it uses less digits than its factorization.

202193753121081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440509266085 (or 440509266079 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The spelling of 202193753121081 in words is "two hundred two trillion, one hundred ninety-three billion, seven hundred fifty-three million, one hundred twenty-one thousand, eighty-one".