102121020122 has 64 divisors (see below), whose sum is σ = 170638876800. Its totient is φ = 45451591680.

The previous prime is 102121020019. The next prime is 102121020151. The reversal of 102121020122 is 221020121201.

It is a junction number, because it is equal to n+sod(n) for n = 102121020097 and 102121020106.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72476954 + ... + 72478362.

It is an arithmetic number, because the mean of its divisors is an integer number (2666232450).

Almost surely, 2^102121020122 is an apocalyptic number.

102121020122 is a deficient number, since it is larger than the sum of its proper divisors (68517856678).

102121020122 is a wasteful number, since it uses less digits than its factorization.

102121020122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1871.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 102121020122 its reverse (221020121201), we get a palindrome (323141141323).

The spelling of 102121020122 in words is "one hundred two billion, one hundred twenty-one million, twenty thousand, one hundred twenty-two".