1220021220122 has 8 divisors (see below), whose sum is σ = 1830041724000. Its totient is φ = 610007312124.

The previous prime is 1220021220107. The next prime is 1220021220127. The reversal of 1220021220122 is 2210221200221.

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 1220021220122.

It is not an unprimeable number, because it can be changed into a prime (1220021220127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1157222 + ... + 1944017.

It is an arithmetic number, because the mean of its divisors is an integer number (228755215500).

Almost surely, 2^{1220021220122} is an apocalyptic number.

1220021220122 is a deficient number, since it is larger than the sum of its proper divisors (610020503878).

1220021220122 is a wasteful number, since it uses less digits than its factorization.

1220021220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3297940.

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

Adding to 1220021220122 its reverse (2210221200221), we get a palindrome (3430242420343).

The spelling of 1220021220122 in words is "one trillion, two hundred twenty billion, twenty-one million, two hundred twenty thousand, one hundred twenty-two".