1220001021022 has 16 divisors (see below), whose sum is σ = 2091444502752. Its totient is φ = 522854035200.

The previous prime is 1220001021011. The next prime is 1220001021023. The reversal of 1220001021022 is 2201201000221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1220001020993 and 1220001021011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220001021023) 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, 3816778 + ... + 4124050.

It is an arithmetic number, because the mean of its divisors is an integer number (130715281422).

Almost surely, 2^{1220001021022} is an apocalyptic number.

1220001021022 is a deficient number, since it is larger than the sum of its proper divisors (871443481730).

1220001021022 is a wasteful number, since it uses less digits than its factorization.

1220001021022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590883.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1220001021022 its reverse (2201201000221), we get a palindrome (3421202021243).

The spelling of 1220001021022 in words is "one trillion, two hundred twenty billion, one million, twenty-one thousand, twenty-two".