61232121 has 12 divisors (see below), whose sum is σ = 88545600. Its totient is φ = 40775640.

The previous prime is 61232111. The next prime is 61232153. The reversal of 61232121 is 12123216.

61232121 is a `hidden beast` number, since 612 + 32 + 1 + 21 = 666.

It is not a de Polignac number, because 61232121 - 2⁶ = 61232057 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 61232094 and 61232103.

It is not an unprimeable number, because it can be changed into a prime (61232111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5980 + ... + 12578.

It is an arithmetic number, because the mean of its divisors is an integer number (7378800).

Almost surely, 2^61232121 is an apocalyptic number.

It is an amenable number.

61232121 is a deficient number, since it is larger than the sum of its proper divisors (27313479).

61232121 is a wasteful number, since it uses less digits than its factorization.

61232121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7636 (or 7633 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 61232121 is about 7825.0955904704. The cubic root of 61232121 is about 394.1483997830.

Adding to 61232121 its reverse (12123216), we get a palindrome (73355337).

The spelling of 61232121 in words is "sixty-one million, two hundred thirty-two thousand, one hundred twenty-one".