101001022011 has 32 divisors (see below), whose sum is σ = 155706144000. Its totient is φ = 64653349824.

The previous prime is 101001021991. The next prime is 101001022037. The reversal of 101001022011 is 110220100101.

It is a happy number.

It is not a de Polignac number, because 101001022011 - 2²² = 100996827707 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 101001021984 and 101001022002.

It is not an unprimeable number, because it can be changed into a prime (101001022711) 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, 668746 + ... + 805743.

It is an arithmetic number, because the mean of its divisors is an integer number (4865817000).

Almost surely, 2^101001022011 is an apocalyptic number.

101001022011 is a deficient number, since it is larger than the sum of its proper divisors (54705121989).

101001022011 is a wasteful number, since it uses less digits than its factorization.

101001022011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1474600 (or 1474594 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 101001022011 its reverse (110220100101), we get a palindrome (211221122112).

The spelling of 101001022011 in words is "one hundred one billion, one million, twenty-two thousand, eleven".