121203310212 has 18 divisors (see below), whose sum is σ = 306375034238. Its totient is φ = 40401103392.

The previous prime is 121203310147. The next prime is 121203310223. The reversal of 121203310212 is 212013302121.

121203310212 is a `hidden beast` number, since 1 + 2 + 120 + 331 + 0 + 212 = 666.

121203310212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 61639979076 + 59563331136 = 248274^2 + 244056^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1683379273 + ... + 1683379344.

Almost surely, 2^121203310212 is an apocalyptic number.

121203310212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121203310212 is an abundant number, since it is smaller than the sum of its proper divisors (185171724026).

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

121203310212 is a wasteful number, since it uses less digits than its factorization.

121203310212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3366758627 (or 3366758622 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 121203310212 its reverse (212013302121), we get a palindrome (333216612333).

The spelling of 121203310212 in words is "one hundred twenty-one billion, two hundred three million, three hundred ten thousand, two hundred twelve".