11211202101021 has 16 divisors (see below), whose sum is σ = 16099274579136. Its totient is φ = 6898713480576.

The previous prime is 11211202100983. The next prime is 11211202101109. The reversal of 11211202101021 is 12010120211211.

It is a happy number.

It is not a de Polignac number, because 11211202101021 - 2²² = 11211197906717 is a prime.

It is a super-4 number, since 4×11211202101021⁴ (a number of 53 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211202101721) 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, 9603715 + ... + 10707648.

It is an arithmetic number, because the mean of its divisors is an integer number (1006204661196).

Almost surely, 2^{11211202101021} is an apocalyptic number.

It is an amenable number.

11211202101021 is a deficient number, since it is larger than the sum of its proper divisors (4888072478115).

11211202101021 is a wasteful number, since it uses less digits than its factorization.

11211202101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20325532.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11211202101021 its reverse (12010120211211), we get a palindrome (23221322312232).

The spelling of 11211202101021 in words is "eleven trillion, two hundred eleven billion, two hundred two million, one hundred one thousand, twenty-one".