122121501 has 4 divisors (see below), whose sum is σ = 162828672. Its totient is φ = 81414332.

The previous prime is 122121499. The next prime is 122121509. The reversal of 122121501 is 105121221.

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 122121501 - 2¹ = 122121499 is a prime.

It is a super-2 number, since 2×122121501² = 29827322012986002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122121509) 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, 20353581 + ... + 20353586.

It is an arithmetic number, because the mean of its divisors is an integer number (40707168).

Almost surely, 2^122121501 is an apocalyptic number.

It is an amenable number.

122121501 is a deficient number, since it is larger than the sum of its proper divisors (40707171).

122121501 is an equidigital number, since it uses as much as digits as its factorization.

122121501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40707170.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 122121501 is about 11050.8597403098. The cubic root of 122121501 is about 496.1321580827.

Adding to 122121501 its reverse (105121221), we get a palindrome (227242722).

It can be divided in two parts, 1221 and 21501, that added together give a palindrome (22722).

The spelling of 122121501 in words is "one hundred twenty-two million, one hundred twenty-one thousand, five hundred one".