21221523045514 has 32 divisors (see below), whose sum is σ = 34767776644992. Its totient is φ = 9634580760000.

The previous prime is 21221523045491. The next prime is 21221523045521. The reversal of 21221523045514 is 41554032512212.

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, 160519339 + ... + 160651489.

It is an arithmetic number, because the mean of its divisors is an integer number (1086493020156).

Almost surely, 2^{21221523045514} is an apocalyptic number.

21221523045514 is a deficient number, since it is larger than the sum of its proper divisors (13546253599478).

21221523045514 is a wasteful number, since it uses less digits than its factorization.

21221523045514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140862.

The product of its (nonzero) digits is 96000, while the sum is 37.

Adding to 21221523045514 its reverse (41554032512212), we get a palindrome (62775555557726).

The spelling of 21221523045514 in words is "twenty-one trillion, two hundred twenty-one billion, five hundred twenty-three million, forty-five thousand, five hundred fourteen".