102001221221210 has 32 divisors (see below), whose sum is σ = 192386513041920. Its totient is φ = 38863263163648.

The previous prime is 102001221221167. The next prime is 102001221221267. The reversal of 102001221221210 is 12122122100201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 927734927 + ... + 927844866.

It is an arithmetic number, because the mean of its divisors is an integer number (6012078532560).

Almost surely, 2^{102001221221210} is an apocalyptic number.

102001221221210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102001221221210 is a deficient number, since it is larger than the sum of its proper divisors (90385291820710).

102001221221210 is a wasteful number, since it uses less digits than its factorization.

102001221221210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1855580062.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 102001221221210 its reverse (12122122100201), we get a palindrome (114123343321411).

The spelling of 102001221221210 in words is "one hundred two trillion, one billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred ten".