220212107011021 has 2 divisors, whose sum is σ = 220212107011022. Its totient is φ = 220212107011020.

The previous prime is 220212107011009. The next prime is 220212107011069. The reversal of 220212107011021 is 120110701212022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196153189920900 + 24058917090121 = 14005470^2 + 4904989^2 .

It is a cyclic number.

It is not a de Polignac number, because 220212107011021 - 2²³ = 220212098622413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220212107010983 and 220212107011001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220212107111021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110106053505510 + 110106053505511.

It is an arithmetic number, because the mean of its divisors is an integer number (110106053505511).

Almost surely, 2^{220212107011021} is an apocalyptic number.

It is an amenable number.

220212107011021 is a deficient number, since it is larger than the sum of its proper divisors (1).

220212107011021 is an equidigital number, since it uses as much as digits as its factorization.

220212107011021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 220212107011021 its reverse (120110701212022), we get a palindrome (340322808223043).

The spelling of 220212107011021 in words is "two hundred twenty trillion, two hundred twelve billion, one hundred seven million, eleven thousand, twenty-one".