102312211442 has 16 divisors (see below), whose sum is σ = 175452849792. Its totient is φ = 43832968800.

The previous prime is 102312211373. The next prime is 102312211447. The reversal of 102312211442 is 244112213201.

It is a super-2 number, since 2×102312211442² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102312211447) 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, 1218059 + ... + 1299342.

It is an arithmetic number, because the mean of its divisors is an integer number (10965803112).

Almost surely, 2^102312211442 is an apocalyptic number.

102312211442 is a deficient number, since it is larger than the sum of its proper divisors (73140638350).

102312211442 is a wasteful number, since it uses less digits than its factorization.

102312211442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2520313.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 102312211442 its reverse (244112213201), we get a palindrome (346424424643).

The spelling of 102312211442 in words is "one hundred two billion, three hundred twelve million, two hundred eleven thousand, four hundred forty-two".