21213641403122 has 32 divisors (see below), whose sum is σ = 36376699067904. Its totient is φ = 9088946884800.

The previous prime is 21213641403113. The next prime is 21213641403131. The reversal of 21213641403122 is 22130414631212.

It is an interprime number because it is at equal distance from previous prime (21213641403113) and next prime (21213641403131).

It is a super-2 number, since 2×21213641403122² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1223314172 + ... + 1223331512.

It is an arithmetic number, because the mean of its divisors is an integer number (1136771845872).

Almost surely, 2^{21213641403122} is an apocalyptic number.

21213641403122 is a deficient number, since it is larger than the sum of its proper divisors (15163057664782).

21213641403122 is a wasteful number, since it uses less digits than its factorization.

21213641403122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37434.

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 21213641403122 in words is "twenty-one trillion, two hundred thirteen billion, six hundred forty-one million, four hundred three thousand, one hundred twenty-two".