121200210220212 has 36 divisors (see below), whose sum is σ = 316250010900096. Its totient is φ = 39096842006160.

The previous prime is 121200210220153. The next prime is 121200210220213. The reversal of 121200210220212 is 212022012002121.

It is a happy number.

121200210220212 is a `hidden beast` number, since 1 + 2 + 1 + 20 + 0 + 210 + 220 + 212 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121200210220213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54301168338 + ... + 54301170569.

Almost surely, 2^{121200210220212} is an apocalyptic number.

121200210220212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121200210220212 is an abundant number, since it is smaller than the sum of its proper divisors (195049800679884).

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

121200210220212 is a wasteful number, since it uses less digits than its factorization.

121200210220212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108602338948 (or 108602338943 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121200210220212 its reverse (212022012002121), we get a palindrome (333222222222333).

The spelling of 121200210220212 in words is "one hundred twenty-one trillion, two hundred billion, two hundred ten million, two hundred twenty thousand, two hundred twelve".