21220013423102 has 16 divisors (see below), whose sum is σ = 34351884704592. Its totient is φ = 9772880496960.

The previous prime is 21220013423101. The next prime is 21220013423131. The reversal of 21220013423102 is 20132431002212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220013423101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 873814799 + ... + 873839082.

It is an arithmetic number, because the mean of its divisors is an integer number (2146992794037).

Almost surely, 2^{21220013423102} is an apocalyptic number.

21220013423102 is a deficient number, since it is larger than the sum of its proper divisors (13131871281490).

21220013423102 is a wasteful number, since it uses less digits than its factorization.

21220013423102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1747654363.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21220013423102 its reverse (20132431002212), we get a palindrome (41352444425314).

The spelling of 21220013423102 in words is "twenty-one trillion, two hundred twenty billion, thirteen million, four hundred twenty-three thousand, one hundred two".