102211211513042 has 4 divisors (see below), whose sum is σ = 153316817269566. Its totient is φ = 51105605756520.

The previous prime is 102211211513003. The next prime is 102211211513093. The reversal of 102211211513042 is 240315112112201.

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., 89659290761881 + 12551920751161 = 9468859^2 + 3542869^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25552802878259 + ... + 25552802878262.

Almost surely, 2^{102211211513042} is an apocalyptic number.

102211211513042 is a deficient number, since it is larger than the sum of its proper divisors (51105605756524).

102211211513042 is an equidigital number, since it uses as much as digits as its factorization.

102211211513042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51105605756523.

The product of its (nonzero) digits is 960, while the sum is 26.

Adding to 102211211513042 its reverse (240315112112201), we get a palindrome (342526323625243).

The spelling of 102211211513042 in words is "one hundred two trillion, two hundred eleven billion, two hundred eleven million, five hundred thirteen thousand, forty-two".