121213131332 has 12 divisors (see below), whose sum is σ = 224600802300. Its totient is φ = 57041473536.

The previous prime is 121213131311. The next prime is 121213131337. The reversal of 121213131332 is 233131312121.

It can be written as a sum of positive squares in 2 ways, for example, as 78436964356 + 42776166976 = 280066^2 + 206824^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121213131298 and 121213131307.

It is not an unprimeable number, because it can be changed into a prime (121213131337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 891272957 + ... + 891273092.

It is an arithmetic number, because the mean of its divisors is an integer number (18716733525).

Almost surely, 2^121213131332 is an apocalyptic number.

It is an amenable number.

121213131332 is a deficient number, since it is larger than the sum of its proper divisors (103387670968).

121213131332 is a wasteful number, since it uses less digits than its factorization.

121213131332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1782546070 (or 1782546068 counting only the distinct ones).

The product of its digits is 648, while the sum is 23.

Adding to 121213131332 its reverse (233131312121), we get a palindrome (354344443453).

The spelling of 121213131332 in words is "one hundred twenty-one billion, two hundred thirteen million, one hundred thirty-one thousand, three hundred thirty-two".