121652641 has 4 divisors (see below), whose sum is σ = 132711984. Its totient is φ = 110593300.

The previous prime is 121652627. The next prime is 121652677. The reversal of 121652641 is 146256121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121652641 - 2²¹ = 119555489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121652621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5529655 + ... + 5529676.

It is an arithmetic number, because the mean of its divisors is an integer number (33177996).

Almost surely, 2^121652641 is an apocalyptic number.

121652641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121652641 is a deficient number, since it is larger than the sum of its proper divisors (11059343).

121652641 is a wasteful number, since it uses less digits than its factorization.

121652641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11059342.

The product of its digits is 2880, while the sum is 28.

The square root of 121652641 is about 11029.6256056133. The cubic root of 121652641 is about 495.4964118450.

The spelling of 121652641 in words is "one hundred twenty-one million, six hundred fifty-two thousand, six hundred forty-one".