10021201212111 has 32 divisors (see below), whose sum is σ = 13922340069120. Its totient is φ = 6406367314176.

The previous prime is 10021201212047. The next prime is 10021201212137. The reversal of 10021201212111 is 11121210212001.

It is a happy number.

It is not a de Polignac number, because 10021201212111 - 2⁶ = 10021201212047 is a prime.

It is a super-2 number, since 2×10021201212111² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021201212311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 256681 + ... + 4484226.

It is an arithmetic number, because the mean of its divisors is an integer number (435073127160).

Almost surely, 2^{10021201212111} is an apocalyptic number.

10021201212111 is a deficient number, since it is larger than the sum of its proper divisors (3901138857009).

10021201212111 is a wasteful number, since it uses less digits than its factorization.

10021201212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4741223.

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

Adding to 10021201212111 its reverse (11121210212001), we get a palindrome (21142411424112).

The spelling of 10021201212111 in words is "ten trillion, twenty-one billion, two hundred one million, two hundred twelve thousand, one hundred eleven".