799902212002121 has 4 divisors (see below), whose sum is σ = 799943293743744. Its totient is φ = 799861130260500.

The previous prime is 799902212002079. The next prime is 799902212002123. The reversal of 799902212002121 is 121200212209997.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 799902212002121 - 2²² = 799902207807817 is a prime.

It is a super-2 number, since 2×799902212002121² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (799902212002123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20540841605 + ... + 20540880546.

It is an arithmetic number, because the mean of its divisors is an integer number (199985823435936).

Almost surely, 2^{799902212002121} is an apocalyptic number.

It is an amenable number.

799902212002121 is a deficient number, since it is larger than the sum of its proper divisors (41081741623).

799902212002121 is a wasteful number, since it uses less digits than its factorization.

799902212002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41081741622.

The product of its (nonzero) digits is 163296, while the sum is 47.

The spelling of 799902212002121 in words is "seven hundred ninety-nine trillion, nine hundred two billion, two hundred twelve million, two thousand, one hundred twenty-one".