12121620767 has 16 divisors (see below), whose sum is σ = 12867180480. Its totient is φ = 11398867200.

The previous prime is 12121620739. The next prime is 12121620787. The reversal of 12121620767 is 76702612121.

It is a cyclic number.

It is not a de Polignac number, because 12121620767 - 2¹² = 12121616671 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 (12121620787) 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, 720542 + ... + 737172.

It is an arithmetic number, because the mean of its divisors is an integer number (804198780).

Almost surely, 2^12121620767 is an apocalyptic number.

12121620767 is a deficient number, since it is larger than the sum of its proper divisors (745559713).

12121620767 is a wasteful number, since it uses less digits than its factorization.

12121620767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17314.

The product of its (nonzero) digits is 14112, while the sum is 35.

The spelling of 12121620767 in words is "twelve billion, one hundred twenty-one million, six hundred twenty thousand, seven hundred sixty-seven".