1215012022 has 16 divisors (see below), whose sum is σ = 2103502752. Its totient is φ = 515563200.

The previous prime is 1215011977. The next prime is 1215012041. The reversal of 1215012022 is 2202105121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1215011987 and 1215012005.

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, 428223 + ... + 431050.

It is an arithmetic number, because the mean of its divisors is an integer number (131468922).

Almost surely, 2^1215012022 is an apocalyptic number.

1215012022 is a deficient number, since it is larger than the sum of its proper divisors (888490730).

1215012022 is a wasteful number, since it uses less digits than its factorization.

1215012022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859383.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1215012022 is about 34857.0225636098. The cubic root of 1215012022 is about 1067.0715107569.

Adding to 1215012022 its reverse (2202105121), we get a palindrome (3417117143).

The spelling of 1215012022 in words is "one billion, two hundred fifteen million, twelve thousand, twenty-two".