1215056221222 has 16 divisors (see below), whose sum is σ = 1970854649280. Its totient is φ = 559625392768.

The previous prime is 1215056221199. The next prime is 1215056221229. The reversal of 1215056221222 is 2221226505121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215056221229) 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, 380178697 + ... + 380181892.

It is an arithmetic number, because the mean of its divisors is an integer number (123178415580).

Almost surely, 2^{1215056221222} is an apocalyptic number.

1215056221222 is a deficient number, since it is larger than the sum of its proper divisors (755798428058).

1215056221222 is a wasteful number, since it uses less digits than its factorization.

1215056221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760360655.

The product of its (nonzero) digits is 9600, while the sum is 31.

The spelling of 1215056221222 in words is "one trillion, two hundred fifteen billion, fifty-six million, two hundred twenty-one thousand, two hundred twenty-two".