202111210001011 has 4 divisors (see below), whose sum is σ = 202273028425000. Its totient is φ = 201949391577024.

The previous prime is 202111210000979. The next prime is 202111210001053. The reversal of 202111210001011 is 110100012111202.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 202111210001011 - 2⁵ = 202111210000979 is a prime.

It is a super-3 number, since 3×202111210001011³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202111210000982 and 202111210001000.

It is not an unprimeable number, because it can be changed into a prime (202111210001081) 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, 80909210121 + ... + 80909212618.

It is an arithmetic number, because the mean of its divisors is an integer number (50568257106250).

Almost surely, 2^{202111210001011} is an apocalyptic number.

202111210001011 is a deficient number, since it is larger than the sum of its proper divisors (161818423989).

202111210001011 is a wasteful number, since it uses less digits than its factorization.

202111210001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161818423988.

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

Adding to 202111210001011 its reverse (110100012111202), we get a palindrome (312211222112213).

The spelling of 202111210001011 in words is "two hundred two trillion, one hundred eleven billion, two hundred ten million, one thousand, eleven".