61242220010121 has 8 divisors (see below), whose sum is σ = 81657376953504. Its totient is φ = 40827604870080.

The previous prime is 61242220010117. The next prime is 61242220010129. The reversal of 61242220010121 is 12101002224216.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61242220010121 - 2² = 61242220010117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61242220010091 and 61242220010100.

It is not an unprimeable number, because it can be changed into a prime (61242220010129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135187015 + ... + 135639276.

It is an arithmetic number, because the mean of its divisors is an integer number (10207172119188).

Almost surely, 2^{61242220010121} is an apocalyptic number.

It is an amenable number.

61242220010121 is a deficient number, since it is larger than the sum of its proper divisors (20415156943383).

61242220010121 is a wasteful number, since it uses less digits than its factorization.

61242220010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270901671.

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 61242220010121 its reverse (12101002224216), we get a palindrome (73343222234337).

The spelling of 61242220010121 in words is "sixty-one trillion, two hundred forty-two billion, two hundred twenty million, ten thousand, one hundred twenty-one".