2121640236362 has 8 divisors (see below), whose sum is σ = 3349958268000. Its totient is φ = 1004987480364.

The previous prime is 2121640236337. The next prime is 2121640236389. The reversal of 2121640236362 is 2636320461212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (38), and also a Moran number because the ratio is a prime number: 55832637799 = 2121640236362 / (2 + 1 + 2 + 1 + 6 + 4 + 0 + 2 + 3 + 6 + 3 + 6 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27916318862 + ... + 27916318937.

It is an arithmetic number, because the mean of its divisors is an integer number (418744783500).

Almost surely, 2^{2121640236362} is an apocalyptic number.

2121640236362 is a deficient number, since it is larger than the sum of its proper divisors (1228318031638).

2121640236362 is a wasteful number, since it uses less digits than its factorization.

2121640236362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55832637820.

The product of its (nonzero) digits is 124416, while the sum is 38.

Adding to 2121640236362 its reverse (2636320461212), we get a palindrome (4757960697574).

The spelling of 2121640236362 in words is "two trillion, one hundred twenty-one billion, six hundred forty million, two hundred thirty-six thousand, three hundred sixty-two".