61211120102 has 16 divisors (see below), whose sum is σ = 100167846912. Its totient is φ = 27822070920.

The previous prime is 61211120099. The next prime is 61211120107. The reversal of 61211120102 is 20102111216.

61211120102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61211120107) 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, 695543 + ... + 778589.

It is an arithmetic number, because the mean of its divisors is an integer number (6260490432).

Almost surely, 2^61211120102 is an apocalyptic number.

61211120102 is a deficient number, since it is larger than the sum of its proper divisors (38956726810).

61211120102 is a wasteful number, since it uses less digits than its factorization.

61211120102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116563.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 61211120102 its reverse (20102111216), we get a palindrome (81313231318).

The spelling of 61211120102 in words is "sixty-one billion, two hundred eleven million, one hundred twenty thousand, one hundred two".