101021001011221 has 8 divisors (see below), whose sum is σ = 101346287649984. Its totient is φ = 100695717323520.

The previous prime is 101021001011201. The next prime is 101021001011303. The reversal of 101021001011221 is 122110100120101.

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 101021001011221 - 2⁷ = 101021001011093 is a prime.

It is a super-2 number, since 2×101021001011221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101021001011201) 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, 83173326 + ... + 84379168.

It is an arithmetic number, because the mean of its divisors is an integer number (12668285956248).

Almost surely, 2^{101021001011221} is an apocalyptic number.

It is an amenable number.

101021001011221 is a deficient number, since it is larger than the sum of its proper divisors (325286638763).

101021001011221 is a wasteful number, since it uses less digits than its factorization.

101021001011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1475531.

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

Adding to 101021001011221 its reverse (122110100120101), we get a palindrome (223131101131322).

The spelling of 101021001011221 in words is "one hundred one trillion, twenty-one billion, one million, eleven thousand, two hundred twenty-one".