1021112201011 has 4 divisors (see below), whose sum is σ = 1166985372592. Its totient is φ = 875239029432.

The previous prime is 1021112201009. The next prime is 1021112201027. The reversal of 1021112201011 is 1101022111201.

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 1021112201011 - 2¹ = 1021112201009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021112200982 and 1021112201000.

It is not an unprimeable number, because it can be changed into a prime (1021112201041) 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, 72936585780 + ... + 72936585793.

It is an arithmetic number, because the mean of its divisors is an integer number (291746343148).

Almost surely, 2^{1021112201011} is an apocalyptic number.

1021112201011 is a deficient number, since it is larger than the sum of its proper divisors (145873171581).

1021112201011 is an equidigital number, since it uses as much as digits as its factorization.

1021112201011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145873171580.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1021112201011 its reverse (1101022111201), we get a palindrome (2122134312212).

The spelling of 1021112201011 in words is "one trillion, twenty-one billion, one hundred twelve million, two hundred one thousand, eleven".