101023021221 has 16 divisors (see below), whose sum is σ = 134865024000. Its totient is φ = 67264907760.

The previous prime is 101023021217. The next prime is 101023021243. The reversal of 101023021221 is 122120320101.

It is not a de Polignac number, because 101023021221 - 2² = 101023021217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101023021221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101023021291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9175906 + ... + 9186908.

It is an arithmetic number, because the mean of its divisors is an integer number (8429064000).

Almost surely, 2^101023021221 is an apocalyptic number.

It is an amenable number.

101023021221 is a deficient number, since it is larger than the sum of its proper divisors (33842002779).

101023021221 is a wasteful number, since it uses less digits than its factorization.

101023021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14536.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 101023021221 its reverse (122120320101), we get a palindrome (223143341322).

The spelling of 101023021221 in words is "one hundred one billion, twenty-three million, twenty-one thousand, two hundred twenty-one".