10001211021101 has 24 divisors (see below), whose sum is σ = 11101296635520. Its totient is φ = 8991258769152.

The previous prime is 10001211021089. The next prime is 10001211021107. The reversal of 10001211021101 is 10112011210001.

It is not a de Polignac number, because 10001211021101 - 2²² = 10001206826797 is a prime.

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 (10001211021107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3797555 + ... + 5867183.

It is an arithmetic number, because the mean of its divisors is an integer number (462554026480).

Almost surely, 2^{10001211021101} is an apocalyptic number.

It is an amenable number.

10001211021101 is a deficient number, since it is larger than the sum of its proper divisors (1100085614419).

10001211021101 is a wasteful number, since it uses less digits than its factorization.

10001211021101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2070413 (or 2070396 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 10001211021101 its reverse (10112011210001), we get a palindrome (20113222231102).

The spelling of 10001211021101 in words is "ten trillion, one billion, two hundred eleven million, twenty-one thousand, one hundred one".