61522112121 has 8 divisors (see below), whose sum is σ = 82095801024. Its totient is φ = 40981582320.

The previous prime is 61522112111. The next prime is 61522112131. The reversal of 61522112121 is 12121122516.

It is a happy number.

61522112121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (61522112111) and next prime (61522112131).

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

It is not a de Polignac number, because 61522112121 - 2¹⁴ = 61522095737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61522112091 and 61522112100.

It is not an unprimeable number, because it can be changed into a prime (61522112111) 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, 8285445 + ... + 8292866.

It is an arithmetic number, because the mean of its divisors is an integer number (10261975128).

Almost surely, 2^61522112121 is an apocalyptic number.

It is an amenable number.

61522112121 is a deficient number, since it is larger than the sum of its proper divisors (20573688903).

61522112121 is a wasteful number, since it uses less digits than its factorization.

61522112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16579551.

The product of its digits is 480, while the sum is 24.

Adding to 61522112121 its reverse (12121122516), we get a palindrome (73643234637).

The spelling of 61522112121 in words is "sixty-one billion, five hundred twenty-two million, one hundred twelve thousand, one hundred twenty-one".