101021220201021 has 4 divisors (see below), whose sum is σ = 134694960268032. Its totient is φ = 67347480134012.

The previous prime is 101021220200987. The next prime is 101021220201047. The reversal of 101021220201021 is 120102022120101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 101021220201021 - 2³⁴ = 101004040331837 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101021220201521) 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, 16836870033501 + ... + 16836870033506.

It is an arithmetic number, because the mean of its divisors is an integer number (33673740067008).

Almost surely, 2^{101021220201021} is an apocalyptic number.

It is an amenable number.

101021220201021 is a deficient number, since it is larger than the sum of its proper divisors (33673740067011).

101021220201021 is an equidigital number, since it uses as much as digits as its factorization.

101021220201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33673740067010.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 101021220201021 its reverse (120102022120101), we get a palindrome (221123242321122).

The spelling of 101021220201021 in words is "one hundred one trillion, twenty-one billion, two hundred twenty million, two hundred one thousand, twenty-one".