220212011021021 has 2 divisors, whose sum is σ = 220212011021022. Its totient is φ = 220212011021020.

The previous prime is 220212011020979. The next prime is 220212011021029. The reversal of 220212011021021 is 120120110212022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126005788552900 + 94206222468121 = 11225230^2 + 9705989^2 .

It is a cyclic number.

It is not a de Polignac number, because 220212011021021 - 2³⁰ = 220210937279197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220212011021029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110106005510510 + 110106005510511.

It is an arithmetic number, because the mean of its divisors is an integer number (110106005510511).

Almost surely, 2^{220212011021021} is an apocalyptic number.

It is an amenable number.

220212011021021 is a deficient number, since it is larger than the sum of its proper divisors (1).

220212011021021 is an equidigital number, since it uses as much as digits as its factorization.

220212011021021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 220212011021021 its reverse (120120110212022), we get a palindrome (340332121233043).

The spelling of 220212011021021 in words is "two hundred twenty trillion, two hundred twelve billion, eleven million, twenty-one thousand, twenty-one".