2021010111211 has 8 divisors (see below), whose sum is σ = 2487397060064. Its totient is φ = 1599040967040.

The previous prime is 2021010111187. The next prime is 2021010111221. The reversal of 2021010111211 is 1121110101202.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2021010111211 - 2⁷ = 2021010111083 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 2021010111191 and 2021010111200.

It is not an unprimeable number, because it can be changed into a prime (2021010111221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11104451070 + ... + 11104451251.

It is an arithmetic number, because the mean of its divisors is an integer number (310924632508).

Almost surely, 2^{2021010111211} is an apocalyptic number.

2021010111211 is a deficient number, since it is larger than the sum of its proper divisors (466386948853).

2021010111211 is a wasteful number, since it uses less digits than its factorization.

2021010111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22208902341.

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

Adding to 2021010111211 its reverse (1121110101202), we get a palindrome (3142120212413).

The spelling of 2021010111211 in words is "two trillion, twenty-one billion, ten million, one hundred eleven thousand, two hundred eleven".