1222100220021 has 8 divisors (see below), whose sum is σ = 1630925753184. Its totient is φ = 814004083440.

The previous prime is 1222100219993. The next prime is 1222100220023. The reversal of 1222100220021 is 1200220012221.

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

It is not a de Polignac number, because 1222100220021 - 2⁶ = 1222100219957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222100220023) 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, 182345235 + ... + 182351936.

It is an arithmetic number, because the mean of its divisors is an integer number (203865719148).

Almost surely, 2^{1222100220021} is an apocalyptic number.

It is an amenable number.

1222100220021 is a deficient number, since it is larger than the sum of its proper divisors (408825533163).

1222100220021 is a wasteful number, since it uses less digits than its factorization.

1222100220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364698291.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1222100220021 its reverse (1200220012221), we get a palindrome (2422320232242).

The spelling of 1222100220021 in words is "one trillion, two hundred twenty-two billion, one hundred million, two hundred twenty thousand, twenty-one".