102011122 has 4 divisors (see below), whose sum is σ = 153016686. Its totient is φ = 51005560.

The previous prime is 102011113. The next prime is 102011191. The reversal of 102011122 is 221110201.

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., 94109401 + 7901721 = 9701^2 + 2811^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102011099 and 102011108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25502779 + ... + 25502782.

Almost surely, 2^102011122 is an apocalyptic number.

102011122 is a deficient number, since it is larger than the sum of its proper divisors (51005564).

102011122 is an equidigital number, since it uses as much as digits as its factorization.

102011122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51005563.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 102011122 is about 10100.0555444017. The cubic root of 102011122 is about 467.2498544537.

Adding to 102011122 its reverse (221110201), we get a palindrome (323121323).

The spelling of 102011122 in words is "one hundred two million, eleven thousand, one hundred twenty-two".