1021101122111 has 16 divisors (see below), whose sum is σ = 1168680125184. Its totient is φ = 873949587264.

The previous prime is 1021101122059. The next prime is 1021101122141. The reversal of 1021101122111 is 1112211011201.

It is a cyclic number.

It is not a de Polignac number, because 1021101122111 - 2⁶ = 1021101122047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021101122141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21830996 + ... + 21877718.

It is an arithmetic number, because the mean of its divisors is an integer number (73042507824).

Almost surely, 2^{1021101122111} is an apocalyptic number.

1021101122111 is a deficient number, since it is larger than the sum of its proper divisors (147579003073).

1021101122111 is an equidigital number, since it uses as much as digits as its factorization.

1021101122111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51230.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1021101122111 its reverse (1112211011201), we get a palindrome (2133312133312).

It can be divided in two parts, 102110 and 1122111, that added together give a palindrome (1224221).

The spelling of 1021101122111 in words is "one trillion, twenty-one billion, one hundred one million, one hundred twenty-two thousand, one hundred eleven".