33100121997 has 48 divisors (see below), whose sum is σ = 51441781248. Its totient is φ = 20458357920.

The previous prime is 33100121981. The next prime is 33100122049. The reversal of 33100121997 is 79912100133.

It is a happy number.

It is not a de Polignac number, because 33100121997 - 2⁴ = 33100121981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33100121917) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1151838 + ... + 1180224.

It is an arithmetic number, because the mean of its divisors is an integer number (1071703776).

Almost surely, 2^33100121997 is an apocalyptic number.

It is an amenable number.

33100121997 is a deficient number, since it is larger than the sum of its proper divisors (18341659251).

33100121997 is a wasteful number, since it uses less digits than its factorization.

33100121997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28590 (or 28587 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The spelling of 33100121997 in words is "thirty-three billion, one hundred million, one hundred twenty-one thousand, nine hundred ninety-seven".