1201220021222 has 8 divisors (see below), whose sum is σ = 1940432342016. Its totient is φ = 554409240552.

The previous prime is 1201220021129. The next prime is 1201220021231. The reversal of 1201220021222 is 2221200221021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1201220021222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23100384998 + ... + 23100385049.

It is an arithmetic number, because the mean of its divisors is an integer number (242554042752).

Almost surely, 2^{1201220021222} is an apocalyptic number.

1201220021222 is a deficient number, since it is larger than the sum of its proper divisors (739212320794).

1201220021222 is a wasteful number, since it uses less digits than its factorization.

1201220021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46200770062.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1201220021222 its reverse (2221200221021), we get a palindrome (3422420242243).

The spelling of 1201220021222 in words is "one trillion, two hundred one billion, two hundred twenty million, twenty-one thousand, two hundred twenty-two".