121610500106 has 4 divisors (see below), whose sum is σ = 182415750162. Its totient is φ = 60805250052.

The previous prime is 121610500079. The next prime is 121610500133. The reversal of 121610500106 is 601005016121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 601005016121 = 15101 ⋅39799021.

It is an interprime number because it is at equal distance from previous prime (121610500079) and next prime (121610500133).

It can be written as a sum of positive squares in only one way, i.e., 86644866025 + 34965634081 = 294355^2 + 186991^2 .

It is a super-2 number, since 2×121610500106² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30402625025 + ... + 30402625028.

Almost surely, 2^121610500106 is an apocalyptic number.

121610500106 is a deficient number, since it is larger than the sum of its proper divisors (60805250056).

121610500106 is an equidigital number, since it uses as much as digits as its factorization.

121610500106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60805250055.

The product of its (nonzero) digits is 360, while the sum is 23.

Adding to 121610500106 its reverse (601005016121), we get a palindrome (722615516227).

The spelling of 121610500106 in words is "one hundred twenty-one billion, six hundred ten million, five hundred thousand, one hundred six".