1022111220101 has 4 divisors (see below), whose sum is σ = 1038867141804. Its totient is φ = 1005355298400.

The previous prime is 1022111220083. The next prime is 1022111220103. The reversal of 1022111220101 is 1010221112201.

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

It can be written as a sum of positive squares in 2 ways, for example, as 337270562500 + 684840657601 = 580750^2 + 827551^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1022111220101 is a prime.

It is a super-2 number, since 2×1022111220101² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022111220103) 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, 8377960760 + ... + 8377960881.

It is an arithmetic number, because the mean of its divisors is an integer number (259716785451).

Almost surely, 2^{1022111220101} is an apocalyptic number.

It is an amenable number.

1022111220101 is a deficient number, since it is larger than the sum of its proper divisors (16755921703).

1022111220101 is an equidigital number, since it uses as much as digits as its factorization.

1022111220101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16755921702.

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

Adding to 1022111220101 its reverse (1010221112201), we get a palindrome (2032332332302).

The spelling of 1022111220101 in words is "one trillion, twenty-two billion, one hundred eleven million, two hundred twenty thousand, one hundred one".