121201012201100 has 72 divisors (see below), whose sum is σ = 284579800549968. Its totient is φ = 44539052140800.

The previous prime is 121201012200973. The next prime is 121201012201121. The reversal of 121201012201100 is 1102210102121.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 220653539 + ... + 221202138.

Almost surely, 2^{121201012201100} is an apocalyptic number.

121201012201100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121201012201100 is an abundant number, since it is smaller than the sum of its proper divisors (163378788348868).

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

121201012201100 is a wasteful number, since it uses less digits than its factorization.

121201012201100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441855915 (or 441855908 counting only the distinct ones).

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

Adding to 121201012201100 its reverse (1102210102121), we get a palindrome (122303222303221).

The spelling of 121201012201100 in words is "one hundred twenty-one trillion, two hundred one billion, twelve million, two hundred one thousand, one hundred".