21213611546101 has 16 divisors (see below), whose sum is σ = 24420139188480. Its totient is φ = 18273573521280.

The previous prime is 21213611546081. The next prime is 21213611546111. The reversal of 21213611546101 is 10164511631212.

It is a cyclic number.

It is not a de Polignac number, because 21213611546101 - 2⁵ = 21213611546069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21213611546111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 865213761 + ... + 865238278.

It is an arithmetic number, because the mean of its divisors is an integer number (1526258699280).

Almost surely, 2^{21213611546101} is an apocalyptic number.

It is an amenable number.

21213611546101 is a deficient number, since it is larger than the sum of its proper divisors (3206527642379).

21213611546101 is a wasteful number, since it uses less digits than its factorization.

21213611546101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1730452116.

The product of its (nonzero) digits is 8640, while the sum is 34.

The spelling of 21213611546101 in words is "twenty-one trillion, two hundred thirteen billion, six hundred eleven million, five hundred forty-six thousand, one hundred one".