1219622012 has 24 divisors (see below), whose sum is σ = 2545299456. Its totient is φ = 499969008.

The previous prime is 1219621993. The next prime is 1219622051. The reversal of 1219622012 is 2102269121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 946268 + ... + 947555.

It is an arithmetic number, because the mean of its divisors is an integer number (106054144).

Almost surely, 2^1219622012 is an apocalyptic number.

It is an amenable number.

1219622012 is an abundant number, since it is smaller than the sum of its proper divisors (1325677444).

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

1219622012 is a wasteful number, since it uses less digits than its factorization.

1219622012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1893857 (or 1893855 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1219622012 is about 34923.0870914929. The cubic root of 1219622012 is about 1068.4193659044.

The spelling of 1219622012 in words is "one billion, two hundred nineteen million, six hundred twenty-two thousand, twelve".