12220011211021 has 2 divisors, whose sum is σ = 12220011211022. Its totient is φ = 12220011211020.

The previous prime is 12220011210973. The next prime is 12220011211043. The reversal of 12220011211021 is 12011211002221.

12220011211021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7499168648521 + 4720842562500 = 2738461^2 + 2172750^2 .

It is a cyclic number.

It is not a de Polignac number, because 12220011211021 - 2⁷ = 12220011210893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12220011210986 and 12220011211004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12220011211081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110005605510 + 6110005605511.

It is an arithmetic number, because the mean of its divisors is an integer number (6110005605511).

Almost surely, 2^{12220011211021} is an apocalyptic number.

It is an amenable number.

12220011211021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220011211021 is an equidigital number, since it uses as much as digits as its factorization.

12220011211021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12220011211021 its reverse (12011211002221), we get a palindrome (24231222213242).

The spelling of 12220011211021 in words is "twelve trillion, two hundred twenty billion, eleven million, two hundred eleven thousand, twenty-one".