2902212221221 has 4 divisors (see below), whose sum is σ = 2929335700032. Its totient is φ = 2875088742412.

The previous prime is 2902212221159. The next prime is 2902212221231. The reversal of 2902212221221 is 1221222122092.

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 2902212221221 - 2⁹ = 2902212220709 is a prime.

It is a super-3 number, since 3×2902212221221³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2902212221221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2902212221231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13561739245 + ... + 13561739458.

It is an arithmetic number, because the mean of its divisors is an integer number (732333925008).

Almost surely, 2^{2902212221221} is an apocalyptic number.

It is an amenable number.

2902212221221 is a deficient number, since it is larger than the sum of its proper divisors (27123478811).

2902212221221 is a wasteful number, since it uses less digits than its factorization.

2902212221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27123478810.

The product of its (nonzero) digits is 2304, while the sum is 28.

The spelling of 2902212221221 in words is "two trillion, nine hundred two billion, two hundred twelve million, two hundred twenty-one thousand, two hundred twenty-one".