121012211101212 has 72 divisors (see below), whose sum is σ = 313572044625840. Its totient is φ = 39326024666880.

The previous prime is 121012211101193. The next prime is 121012211101241. The reversal of 121012211101212 is 212101112210121.

It is a happy number.

121012211101212 is a `hidden beast` number, since 1 + 210 + 1 + 221 + 110 + 121 + 2 = 666.

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

It is a congruent number.

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, 26577498 + ... + 30795905.

It is an arithmetic number, because the mean of its divisors is an integer number (4355167286470).

Almost surely, 2^{121012211101212} is an apocalyptic number.

121012211101212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121012211101212 is an abundant number, since it is smaller than the sum of its proper divisors (192559833524628).

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

121012211101212 is a wasteful number, since it uses less digits than its factorization.

121012211101212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57374883 (or 57374878 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 121012211101212 its reverse (212101112210121), we get a palindrome (333113323311333).

The spelling of 121012211101212 in words is "one hundred twenty-one trillion, twelve billion, two hundred eleven million, one hundred one thousand, two hundred twelve".