124202121 has 16 divisors (see below), whose sum is σ = 169646400. Its totient is φ = 80803008.

The previous prime is 124202101. The next prime is 124202137. The reversal of 124202121 is 121202421.

It is not a de Polignac number, because 124202121 - 2¹³ = 124193929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 124202121.

It is not an unprimeable number, because it can be changed into a prime (124202101) 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, 19075 + ... + 24743.

It is an arithmetic number, because the mean of its divisors is an integer number (10602900).

Almost surely, 2^124202121 is an apocalyptic number.

It is an amenable number.

124202121 is a deficient number, since it is larger than the sum of its proper divisors (45444279).

124202121 is a wasteful number, since it uses less digits than its factorization.

124202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5848.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 124202121 is about 11144.6005311990. The cubic root of 124202121 is about 498.9338897669.

Adding to 124202121 its reverse (121202421), we get a palindrome (245404542).

It can be divided in two parts, 12420 and 2121, that added together give a palindrome (14541).

The spelling of 124202121 in words is "one hundred twenty-four million, two hundred two thousand, one hundred twenty-one".