1011222120021 has 8 divisors (see below), whose sum is σ = 1368419983584. Its totient is φ = 664086168240.

The previous prime is 1011222119993. The next prime is 1011222120089. The reversal of 1011222120021 is 1200212221101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1011222120021 - 2¹¹ = 1011222117973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011222120421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2515477710 + ... + 2515478111.

It is an arithmetic number, because the mean of its divisors is an integer number (171052497948).

Almost surely, 2^{1011222120021} is an apocalyptic number.

It is an amenable number.

1011222120021 is a deficient number, since it is larger than the sum of its proper divisors (357197863563).

1011222120021 is an equidigital number, since it uses as much as digits as its factorization.

1011222120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5030955891.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1011222120021 its reverse (1200212221101), we get a palindrome (2211434341122).

The spelling of 1011222120021 in words is "one trillion, eleven billion, two hundred twenty-two million, one hundred twenty thousand, twenty-one".