1020220122211 has 4 divisors (see below), whose sum is σ = 1020236620624. Its totient is φ = 1020203623800.

The previous prime is 1020220122199. The next prime is 1020220122221. The reversal of 1020220122211 is 1122210220201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1020220122211 - 2⁷ = 1020220122083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020220122221) 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, 8156100 + ... + 8280241.

It is an arithmetic number, because the mean of its divisors is an integer number (255059155156).

Almost surely, 2^{1020220122211} is an apocalyptic number.

1020220122211 is a deficient number, since it is larger than the sum of its proper divisors (16498413).

1020220122211 is an equidigital number, since it uses as much as digits as its factorization.

1020220122211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16498412.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1020220122211 its reverse (1122210220201), we get a palindrome (2142430342412).

The spelling of 1020220122211 in words is "one trillion, twenty billion, two hundred twenty million, one hundred twenty-two thousand, two hundred eleven".