1201131421212 has 48 divisors (see below), whose sum is σ = 2859273460512. Its totient is φ = 392306503680.

The previous prime is 1201131421121. The next prime is 1201131421219. The reversal of 1201131421212 is 2121241311021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201131421219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 756853 + ... + 1724844.

It is an arithmetic number, because the mean of its divisors is an integer number (59568197094).

Almost surely, 2^{1201131421212} is an apocalyptic number.

1201131421212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1201131421212 is an abundant number, since it is smaller than the sum of its proper divisors (1658142039300).

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

1201131421212 is a wasteful number, since it uses less digits than its factorization.

1201131421212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2482518 (or 2482516 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 1201131421212 its reverse (2121241311021), we get a palindrome (3322372732233).

The spelling of 1201131421212 in words is "one trillion, two hundred one billion, one hundred thirty-one million, four hundred twenty-one thousand, two hundred twelve".