122220001211021 has 4 divisors (see below), whose sum is σ = 139680001384032. Its totient is φ = 104760001038012.

The previous prime is 122220001211003. The next prime is 122220001211039. The reversal of 122220001211021 is 120112100022221.

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 an interprime number because it is at equal distance from previous prime (122220001211003) and next prime (122220001211039).

It is a cyclic number.

It is not a de Polignac number, because 122220001211021 - 2³⁴ = 122202821341837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122220001211081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8730000086495 + ... + 8730000086508.

It is an arithmetic number, because the mean of its divisors is an integer number (34920000346008).

Almost surely, 2^{122220001211021} is an apocalyptic number.

It is an amenable number.

122220001211021 is a deficient number, since it is larger than the sum of its proper divisors (17460000173011).

122220001211021 is an equidigital number, since it uses as much as digits as its factorization.

122220001211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17460000173010.

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

Adding to 122220001211021 its reverse (120112100022221), we get a palindrome (242332101233242).

The spelling of 122220001211021 in words is "one hundred twenty-two trillion, two hundred twenty billion, one million, two hundred eleven thousand, twenty-one".