1212221484 has 48 divisors (see below), whose sum is σ = 3165775200. Its totient is φ = 401119488.

The previous prime is 1212221467. The next prime is 1212221501. The reversal of 1212221484 is 4841222121.

It is an interprime number because it is at equal distance from previous prime (1212221467) and next prime (1212221501).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26169 + ... + 55760.

It is an arithmetic number, because the mean of its divisors is an integer number (65953650).

Almost surely, 2^1212221484 is an apocalyptic number.

It is an amenable number.

1212221484 is an abundant number, since it is smaller than the sum of its proper divisors (1953553716).

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

1212221484 is a wasteful number, since it uses less digits than its factorization.

1212221484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82079 (or 82071 counting only the distinct ones).

The product of its digits is 2048, while the sum is 27.

The square root of 1212221484 is about 34816.9712065826. The cubic root of 1212221484 is about 1066.2539643443.

The spelling of 1212221484 in words is "one billion, two hundred twelve million, two hundred twenty-one thousand, four hundred eighty-four".