101212160645 has 16 divisors (see below), whose sum is σ = 125655462000. Its totient is φ = 78169717248.

The previous prime is 101212160579. The next prime is 101212160657. The reversal of 101212160645 is 546061212101.

It can be written as a sum of positive squares in 8 ways, for example, as 10679775649 + 90532384996 = 103343^2 + 300886^2 .

It is a cyclic number.

It is not a de Polignac number, because 101212160645 - 2⁸ = 101212160389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

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, 1679801 + ... + 1739009.

It is an arithmetic number, because the mean of its divisors is an integer number (7853466375).

Almost surely, 2^101212160645 is an apocalyptic number.

It is an amenable number.

101212160645 is a deficient number, since it is larger than the sum of its proper divisors (24443301355).

101212160645 is a wasteful number, since it uses less digits than its factorization.

101212160645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71032.

The product of its (nonzero) digits is 2880, while the sum is 29.

Adding to 101212160645 its reverse (546061212101), we get a palindrome (647273372746).

The spelling of 101212160645 in words is "one hundred one billion, two hundred twelve million, one hundred sixty thousand, six hundred forty-five".