1012211021101 has 16 divisors (see below), whose sum is σ = 1168135398144. Its totient is φ = 859118667264.

The previous prime is 1012211021071. The next prime is 1012211021137. The reversal of 1012211021101 is 1011201122101.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1012211021101 - 2⁵ = 1012211021069 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 (1012211021191) 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, 10563261 + ... + 10658653.

It is an arithmetic number, because the mean of its divisors is an integer number (73008462384).

Almost surely, 2^{1012211021101} is an apocalyptic number.

It is an amenable number.

1012211021101 is a deficient number, since it is larger than the sum of its proper divisors (155924377043).

1012211021101 is a wasteful number, since it uses less digits than its factorization.

1012211021101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110220.

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

Adding to 1012211021101 its reverse (1011201122101), we get a palindrome (2023412143202).

The spelling of 1012211021101 in words is "one trillion, twelve billion, two hundred eleven million, twenty-one thousand, one hundred one".