102121221210010 has 8 divisors (see below), whose sum is σ = 183818198178036. Its totient is φ = 40848488484000.

The previous prime is 102121221209981. The next prime is 102121221210011. The reversal of 102121221210010 is 10012122121201.

It can be written as a sum of positive squares in 2 ways, for example, as 99810070269001 + 2311150941009 = 9990499^2 + 1520247^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (102121221210011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5106061060491 + ... + 5106061060510.

Almost surely, 2^{102121221210010} is an apocalyptic number.

102121221210010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102121221210010 is a deficient number, since it is larger than the sum of its proper divisors (81696976968026).

102121221210010 is a wasteful number, since it uses less digits than its factorization.

102121221210010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10212122121008.

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

Adding to 102121221210010 its reverse (10012122121201), we get a palindrome (112133343331211).

The spelling of 102121221210010 in words is "one hundred two trillion, one hundred twenty-one billion, two hundred twenty-one million, two hundred ten thousand, ten".