899902212002121 has 32 divisors (see below), whose sum is σ = 1252865909376000. Its totient is φ = 573471183878208.

The previous prime is 899902212002069. The next prime is 899902212002147. The reversal of 899902212002121 is 121200212209998.

It is not a de Polignac number, because 899902212002121 - 2⁹ = 899902212001609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (899902212002221) 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, 4800178375 + ... + 4800365843.

It is an arithmetic number, because the mean of its divisors is an integer number (39152059668000).

Almost surely, 2^{899902212002121} is an apocalyptic number.

It is an amenable number.

899902212002121 is a deficient number, since it is larger than the sum of its proper divisors (352963697373879).

899902212002121 is a wasteful number, since it uses less digits than its factorization.

899902212002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233133.

The product of its (nonzero) digits is 186624, while the sum is 48.

The spelling of 899902212002121 in words is "eight hundred ninety-nine trillion, nine hundred two billion, two hundred twelve million, two thousand, one hundred twenty-one".