16421251022 has 16 divisors (see below), whose sum is σ = 26936852400. Its totient is φ = 7445951040.

The previous prime is 16421250977. The next prime is 16421251127. The reversal of 16421251022 is 22015212461.

It is a junction number, because it is equal to n+sod(n) for n = 16421250982 and 16421251000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 903497 + ... + 921492.

It is an arithmetic number, because the mean of its divisors is an integer number (1683553275).

Almost surely, 2^16421251022 is an apocalyptic number.

16421251022 is a deficient number, since it is larger than the sum of its proper divisors (10515601378).

16421251022 is a wasteful number, since it uses less digits than its factorization.

16421251022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1825411.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 16421251022 its reverse (22015212461), we get a palindrome (38436463483).

The spelling of 16421251022 in words is "sixteen billion, four hundred twenty-one million, two hundred fifty-one thousand, twenty-two".