1222101021 has 8 divisors (see below), whose sum is σ = 1700314560. Its totient is φ = 779310752.

The previous prime is 1222101019. The next prime is 1222101029. The reversal of 1222101021 is 1201012221.

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

It is a cyclic number.

It is not a de Polignac number, because 1222101021 - 2¹ = 1222101019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1222100988 and 1222101006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222101029) 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, 8855736 + ... + 8855873.

It is an arithmetic number, because the mean of its divisors is an integer number (212539320).

Almost surely, 2^1222101021 is an apocalyptic number.

It is an amenable number.

1222101021 is a deficient number, since it is larger than the sum of its proper divisors (478213539).

1222101021 is a wasteful number, since it uses less digits than its factorization.

1222101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17711635.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1222101021 is about 34958.5614835622. The cubic root of 1222101021 is about 1069.1427672775.

Adding to 1222101021 its reverse (1201012221), we get a palindrome (2423113242).

The spelling of 1222101021 in words is "one billion, two hundred twenty-two million, one hundred one thousand, twenty-one".