21430412321102 has 4 divisors (see below), whose sum is σ = 32145618481656. Its totient is φ = 10715206160550.

The previous prime is 21430412321099. The next prime is 21430412321179. The reversal of 21430412321102 is 20112321403412.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×21430412321102² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5357603080274 + ... + 5357603080277.

It is an arithmetic number, because the mean of its divisors is an integer number (8036404620414).

Almost surely, 2^{21430412321102} is an apocalyptic number.

21430412321102 is a deficient number, since it is larger than the sum of its proper divisors (10715206160554).

21430412321102 is a wasteful number, since it uses less digits than its factorization.

21430412321102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10715206160553.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 21430412321102 its reverse (20112321403412), we get a palindrome (41542733724514).

The spelling of 21430412321102 in words is "twenty-one trillion, four hundred thirty billion, four hundred twelve million, three hundred twenty-one thousand, one hundred two".