1222100101021 has 4 divisors (see below), whose sum is σ = 1222115061600. Its totient is φ = 1222085140444.

The previous prime is 1222100100979. The next prime is 1222100101093. The reversal of 1222100101021 is 1201010012221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222100101021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222100100992 and 1222100101010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222100102021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7357081 + ... + 7521358.

It is an arithmetic number, because the mean of its divisors is an integer number (305528765400).

Almost surely, 2^{1222100101021} is an apocalyptic number.

It is an amenable number.

1222100101021 is a deficient number, since it is larger than the sum of its proper divisors (14960579).

1222100101021 is an equidigital number, since it uses as much as digits as its factorization.

1222100101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14960578.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1222100101021 its reverse (1201010012221), we get a palindrome (2423110113242).

The spelling of 1222100101021 in words is "one trillion, two hundred twenty-two billion, one hundred million, one hundred one thousand, twenty-one".