102121101222010 has 32 divisors (see below), whose sum is σ = 198029112461712. Its totient is φ = 37692674572800.

The previous prime is 102121101222001. The next prime is 102121101222011. The reversal of 102121101222010 is 10222101121201.

It can be written as a sum of positive squares in 8 ways, for example, as 35630596524769 + 66490504697241 = 5969137^2 + 8154171^2 .

It is not an unprimeable number, because it can be changed into a prime (102121101222011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141077041 + ... + 141799060.

Almost surely, 2^{102121101222010} is an apocalyptic number.

102121101222010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102121101222010 is a deficient number, since it is larger than the sum of its proper divisors (95908011239702).

102121101222010 is a wasteful number, since it uses less digits than its factorization.

102121101222010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282878898.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 102121101222010 its reverse (10222101121201), we get a palindrome (112343202343211).

The spelling of 102121101222010 in words is "one hundred two trillion, one hundred twenty-one billion, one hundred one million, two hundred twenty-two thousand, ten".