121202200221100 has 36 divisors (see below), whose sum is σ = 267320393747008. Its totient is φ = 47686111560000.

The previous prime is 121202200221097. The next prime is 121202200221119. The reversal of 121202200221100 is 1122002202121.

It is a happy number.

It is a super-2 number, since 2×121202200221100² (a number of 29 digits) contains 22 as substring.

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, 9934600476 + ... + 9934612675.

Almost surely, 2^{121202200221100} is an apocalyptic number.

121202200221100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121202200221100 is an abundant number, since it is smaller than the sum of its proper divisors (146118193525908).

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

121202200221100 is a wasteful number, since it uses less digits than its factorization.

121202200221100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19869213226 (or 19869213219 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121202200221100 its reverse (1122002202121), we get a palindrome (122324202423221).

The spelling of 121202200221100 in words is "one hundred twenty-one trillion, two hundred two billion, two hundred million, two hundred twenty-one thousand, one hundred".