121020204250 has 64 divisors (see below), whose sum is σ = 250123386240. Its totient is φ = 43477056000.

The previous prime is 121020204211. The next prime is 121020204271. The reversal of 121020204250 is 52402020121.

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, 36855 + ... + 493354.

It is an arithmetic number, because the mean of its divisors is an integer number (3908177910).

Almost surely, 2^121020204250 is an apocalyptic number.

121020204250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121020204250 is an abundant number, since it is smaller than the sum of its proper divisors (129103181990).

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

121020204250 is a wasteful number, since it uses less digits than its factorization.

121020204250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530320 (or 530310 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

Adding to 121020204250 its reverse (52402020121), we get a palindrome (173422224371).

The spelling of 121020204250 in words is "one hundred twenty-one billion, twenty million, two hundred four thousand, two hundred fifty".