102121101021010 has 16 divisors (see below), whose sum is σ = 188092818625536. Its totient is φ = 39898476677808.

The previous prime is 102121101020959. The next prime is 102121101021047. The reversal of 102121101021010 is 10120101121201.

It is a happy number.

It is a super-2 number, since 2×102121101021010² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118745465874 + ... + 118745466733.

It is an arithmetic number, because the mean of its divisors is an integer number (11755801164096).

Almost surely, 2^{102121101021010} is an apocalyptic number.

102121101021010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102121101021010 is a deficient number, since it is larger than the sum of its proper divisors (85971717604526).

102121101021010 is a wasteful number, since it uses less digits than its factorization.

102121101021010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237490932657.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 102121101021010 its reverse (10120101121201), we get a palindrome (112241202142211).

The spelling of 102121101021010 in words is "one hundred two trillion, one hundred twenty-one billion, one hundred one million, twenty-one thousand, ten".