10101220551 has 12 divisors (see below), whose sum is σ = 14865947928. Its totient is φ = 6607087344.

The previous prime is 10101220541. The next prime is 10101220559. The reversal of 10101220551 is 15502210101.

10101220551 is a `hidden beast` number, since 10 + 101 + 2 + 2 + 0 + 551 = 666.

It is not a de Polignac number, because 10101220551 - 2⁶ = 10101220487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10101220559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10587805 + ... + 10588758.

It is an arithmetic number, because the mean of its divisors is an integer number (1238828994).

Almost surely, 2^10101220551 is an apocalyptic number.

10101220551 is a deficient number, since it is larger than the sum of its proper divisors (4764727377).

10101220551 is a wasteful number, since it uses less digits than its factorization.

10101220551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21176622 (or 21176619 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

Adding to 10101220551 its reverse (15502210101), we get a palindrome (25603430652).

The spelling of 10101220551 in words is "ten billion, one hundred one million, two hundred twenty thousand, five hundred fifty-one".