10021002121211 has 4 divisors (see below), whose sum is σ = 10021302103800. Its totient is φ = 10020702138624.

The previous prime is 10021002121201. The next prime is 10021002121231. The reversal of 10021002121211 is 11212120012001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10021002121211 is a prime.

It is a super-2 number, since 2×10021002121211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10021002121201) 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, 149941181 + ... + 150007998.

It is an arithmetic number, because the mean of its divisors is an integer number (2505325525950).

Almost surely, 2^{10021002121211} is an apocalyptic number.

10021002121211 is a deficient number, since it is larger than the sum of its proper divisors (299982589).

10021002121211 is an equidigital number, since it uses as much as digits as its factorization.

10021002121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299982588.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 10021002121211 its reverse (11212120012001), we get a palindrome (21233122133212).

The spelling of 10021002121211 in words is "ten trillion, twenty-one billion, two million, one hundred twenty-one thousand, two hundred eleven".