21012201030122 has 16 divisors (see below), whose sum is σ = 31992346134144. Its totient is φ = 10348364586000.

The previous prime is 21012201030101. The next prime is 21012201030131. The reversal of 21012201030122 is 22103010221012.

It is a self number, because there is not a number n which added to its sum of digits gives 21012201030122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69582254 + ... + 69883577.

It is an arithmetic number, because the mean of its divisors is an integer number (1999521633384).

Almost surely, 2^{21012201030122} is an apocalyptic number.

21012201030122 is a deficient number, since it is larger than the sum of its proper divisors (10980145104022).

21012201030122 is a wasteful number, since it uses less digits than its factorization.

21012201030122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139466965.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21012201030122 its reverse (22103010221012), we get a palindrome (43115211251134).

The spelling of 21012201030122 in words is "twenty-one trillion, twelve billion, two hundred one million, thirty thousand, one hundred twenty-two".