121771270653 has 16 divisors (see below), whose sum is σ = 165931069440. Its totient is φ = 79398552816.

The previous prime is 121771270639. The next prime is 121771270711. The reversal of 121771270653 is 356072177121.

It is not a de Polignac number, because 121771270653 - 2²⁴ = 121754493437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121771270603) 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, 94393 + ... + 502446.

It is an arithmetic number, because the mean of its divisors is an integer number (10370691840).

Almost surely, 2^121771270653 is an apocalyptic number.

It is an amenable number.

121771270653 is a deficient number, since it is larger than the sum of its proper divisors (44159798787).

121771270653 is a wasteful number, since it uses less digits than its factorization.

121771270653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598336.

The product of its (nonzero) digits is 123480, while the sum is 42.

The spelling of 121771270653 in words is "one hundred twenty-one billion, seven hundred seventy-one million, two hundred seventy thousand, six hundred fifty-three".