200221101102021 has 4 divisors (see below), whose sum is σ = 266961468136032. Its totient is φ = 133480734068012.

The previous prime is 200221101101981. The next prime is 200221101102023. The reversal of 200221101102021 is 120201101122002.

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 200221101102021 - 2¹³ = 200221101093829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200221101102023) 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, 33370183517001 + ... + 33370183517006.

It is an arithmetic number, because the mean of its divisors is an integer number (66740367034008).

Almost surely, 2^{200221101102021} is an apocalyptic number.

It is an amenable number.

200221101102021 is a deficient number, since it is larger than the sum of its proper divisors (66740367034011).

200221101102021 is an equidigital number, since it uses as much as digits as its factorization.

200221101102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66740367034010.

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

Adding to 200221101102021 its reverse (120201101122002), we get a palindrome (320422202224023).

The spelling of 200221101102021 in words is "two hundred trillion, two hundred twenty-one billion, one hundred one million, one hundred two thousand, twenty-one".