121202200101220 has 36 divisors (see below), whose sum is σ = 296079660249660. Its totient is φ = 41555040034368.

The previous prime is 121202200101197. The next prime is 121202200101239. The reversal of 121202200101220 is 22101002202121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 45151626494016 + 76050573607204 = 6719496^2 + 8720698^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121202200101194 and 121202200101203.

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, 61837856215 + ... + 61837858174.

It is an arithmetic number, because the mean of its divisors is an integer number (8224435006935).

Almost surely, 2^{121202200101220} is an apocalyptic number.

121202200101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121202200101220 is an abundant number, since it is smaller than the sum of its proper divisors (174877460148440).

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

121202200101220 is a wasteful number, since it uses less digits than its factorization.

121202200101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123675714412 (or 123675714403 counting only the distinct ones).

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

Adding to 121202200101220 its reverse (22101002202121), we get a palindrome (143303202303341).

The spelling of 121202200101220 in words is "one hundred twenty-one trillion, two hundred two billion, two hundred million, one hundred one thousand, two hundred twenty".