102101021122 has 4 divisors (see below), whose sum is σ = 153151531686. Its totient is φ = 51050510560.

The previous prime is 102101021111. The next prime is 102101021129. The reversal of 102101021122 is 221120101201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 73034522001 + 29066499121 = 270249^2 + 170489^2 .

It is not an unprimeable number, because it can be changed into a prime (102101021129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25525255279 + ... + 25525255282.

Almost surely, 2^102101021122 is an apocalyptic number.

102101021122 is a deficient number, since it is larger than the sum of its proper divisors (51050510564).

102101021122 is an equidigital number, since it uses as much as digits as its factorization.

102101021122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51050510563.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 102101021122 its reverse (221120101201), we get a palindrome (323221122323).

The spelling of 102101021122 in words is "one hundred two billion, one hundred one million, twenty-one thousand, one hundred twenty-two".