21121094349670 has 96 divisors (see below), whose sum is σ = 45274339756800. Its totient is φ = 7069849262784.

The previous prime is 21121094349637. The next prime is 21121094349703. The reversal of 21121094349670 is 7694349012112.

It is an interprime number because it is at equal distance from previous prime (21121094349637) and next prime (21121094349703).

It is a super-2 number, since 2×21121094349670² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 45681511 + ... + 46141549.

It is an arithmetic number, because the mean of its divisors is an integer number (471607705800).

Almost surely, 2^{21121094349670} is an apocalyptic number.

21121094349670 is an abundant number, since it is smaller than the sum of its proper divisors (24153245407130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21121094349670 is a wasteful number, since it uses less digits than its factorization.

21121094349670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462282 (or 462275 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 49.

The spelling of 21121094349670 in words is "twenty-one trillion, one hundred twenty-one billion, ninety-four million, three hundred forty-nine thousand, six hundred seventy".