102776121 has 96 divisors (see below), whose sum is σ = 191213568. Its totient is φ = 53887680.

The previous prime is 102776119. The next prime is 102776131. The reversal of 102776121 is 121677201.

It is not a de Polignac number, because 102776121 - 2¹ = 102776119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (102776131) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1447516 + ... + 1447586.

It is an arithmetic number, because the mean of its divisors is an integer number (1991808).

Almost surely, 2^102776121 is an apocalyptic number.

It is an amenable number.

102776121 is a deficient number, since it is larger than the sum of its proper divisors (88437447).

102776121 is an equidigital number, since it uses as much as digits as its factorization.

102776121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 27.

The square root of 102776121 is about 10137.8558383911. The cubic root of 102776121 is about 468.4149426417.

The spelling of 102776121 in words is "one hundred two million, seven hundred seventy-six thousand, one hundred twenty-one".