121622252741 has 4 divisors (see below), whose sum is σ = 132678821184. Its totient is φ = 110565684300.

The previous prime is 121622252699. The next prime is 121622252749. The reversal of 121622252741 is 147252226121.

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 a de Polignac number, because none of the positive numbers 2^k-121622252741 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 (121622252749) 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, 5528284205 + ... + 5528284226.

It is an arithmetic number, because the mean of its divisors is an integer number (33169705296).

Almost surely, 2^121622252741 is an apocalyptic number.

121622252741 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121622252741 is a deficient number, since it is larger than the sum of its proper divisors (11056568443).

121622252741 is a wasteful number, since it uses less digits than its factorization.

121622252741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11056568442.

The product of its digits is 26880, while the sum is 35.

Adding to 121622252741 its reverse (147252226121), we get a palindrome (268874478862).

The spelling of 121622252741 in words is "one hundred twenty-one billion, six hundred twenty-two million, two hundred fifty-two thousand, seven hundred forty-one".