1212220032 has 64 divisors (see below), whose sum is σ = 3323861760. Its totient is φ = 391034880.

The previous prime is 1212219989. The next prime is 1212220033. The reversal of 1212220032 is 2300222121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 1212219993 and 1212220020.

It is not an unprimeable number, because it can be changed into a prime (1212220033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39013 + ... + 62820.

It is an arithmetic number, because the mean of its divisors is an integer number (51935340).

Almost surely, 2^1212220032 is an apocalyptic number.

1212220032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1212220032 is an abundant number, since it is smaller than the sum of its proper divisors (2111641728).

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

1212220032 is a wasteful number, since it uses less digits than its factorization.

1212220032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101881 (or 101869 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1212220032 is about 34816.9503546764. The cubic root of 1212220032 is about 1066.2535386242.

Adding to 1212220032 its reverse (2300222121), we get a palindrome (3512442153).

The spelling of 1212220032 in words is "one billion, two hundred twelve million, two hundred twenty thousand, thirty-two".