102121220011100 has 36 divisors (see below), whose sum is σ = 222403058485944. Its totient is φ = 40701020527680.

The previous prime is 102121220011091. The next prime is 102121220011121. The reversal of 102121220011100 is 1110022121201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1843315622 + ... + 1843371021.

Almost surely, 2^{102121220011100} is an apocalyptic number.

102121220011100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102121220011100 is an abundant number, since it is smaller than the sum of its proper divisors (120281838474844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102121220011100 is a wasteful number, since it uses less digits than its factorization.

102121220011100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3686686934 (or 3686686927 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 102121220011100 its reverse (1110022121201), we get a palindrome (103231242132301).

The spelling of 102121220011100 in words is "one hundred two trillion, one hundred twenty-one billion, two hundred twenty million, eleven thousand, one hundred".