21402123103202 has 32 divisors (see below), whose sum is σ = 34426528269120. Its totient is φ = 9958862934720.

The previous prime is 21402123103181. The next prime is 21402123103247. The reversal of 21402123103202 is 20230132120412.

It is a super-2 number, since 2×21402123103202² (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, 46373324 + ... + 46832567.

It is an arithmetic number, because the mean of its divisors is an integer number (1075829008410).

Almost surely, 2^{21402123103202} is an apocalyptic number.

21402123103202 is a deficient number, since it is larger than the sum of its proper divisors (13024405165918).

21402123103202 is a wasteful number, since it uses less digits than its factorization.

21402123103202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93206066.

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

Adding to 21402123103202 its reverse (20230132120412), we get a palindrome (41632255223614).

The spelling of 21402123103202 in words is "twenty-one trillion, four hundred two billion, one hundred twenty-three million, one hundred three thousand, two hundred two".