1222021101011 has 4 divisors (see below), whose sum is σ = 1222851844224. Its totient is φ = 1221190357800.

The previous prime is 1222021101001. The next prime is 1222021101023. The reversal of 1222021101011 is 1101011202221.

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 1222021101011 - 2²² = 1222016906707 is a prime.

It is a super-2 number, since 2×1222021101011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222021101001) 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, 415369400 + ... + 415372341.

It is an arithmetic number, because the mean of its divisors is an integer number (305712961056).

Almost surely, 2^{1222021101011} is an apocalyptic number.

1222021101011 is a deficient number, since it is larger than the sum of its proper divisors (830743213).

1222021101011 is an equidigital number, since it uses as much as digits as its factorization.

1222021101011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830743212.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1222021101011 its reverse (1101011202221), we get a palindrome (2323032303232).

The spelling of 1222021101011 in words is "one trillion, two hundred twenty-two billion, twenty-one million, one hundred one thousand, eleven".