1220021101223 has 2 divisors, whose sum is σ = 1220021101224. Its totient is φ = 1220021101222.

The previous prime is 1220021101139. The next prime is 1220021101259. The reversal of 1220021101223 is 3221011200221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220021101223 is a prime.

It is a super-2 number, since 2×1220021101223² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220021104223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610010550611 + 610010550612.

It is an arithmetic number, because the mean of its divisors is an integer number (610010550612).

Almost surely, 2^{1220021101223} is an apocalyptic number.

1220021101223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220021101223 is an equidigital number, since it uses as much as digits as its factorization.

1220021101223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1220021101223 its reverse (3221011200221), we get a palindrome (4441032301444).

The spelling of 1220021101223 in words is "one trillion, two hundred twenty billion, twenty-one million, one hundred one thousand, two hundred twenty-three".