221222125311330 has 128 divisors (see below), whose sum is σ = 623775552051456. Its totient is φ = 49502507443200.

The previous prime is 221222125311307. The next prime is 221222125311377. The reversal of 221222125311330 is 33113521222122.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 122816620 + ... + 124604840.

It is an arithmetic number, because the mean of its divisors is an integer number (4873246500402).

Almost surely, 2^{221222125311330} is an apocalyptic number.

221222125311330 is an abundant number, since it is smaller than the sum of its proper divisors (402553426740126).

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

221222125311330 is a wasteful number, since it uses less digits than its factorization.

221222125311330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1817092.

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 221222125311330 its reverse (33113521222122), we get a palindrome (254335646533452).

The spelling of 221222125311330 in words is "two hundred twenty-one trillion, two hundred twenty-two billion, one hundred twenty-five million, three hundred eleven thousand, three hundred thirty".