200221212220021 has 16 divisors (see below), whose sum is σ = 209965405224960. Its totient is φ = 190700112256560.

The previous prime is 200221212219989. The next prime is 200221212220063. The reversal of 200221212220021 is 120022212122002.

200221212220021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 200221212220021 - 2⁵ = 200221212219989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200221212220091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147262941 + ... + 148616338.

It is an arithmetic number, because the mean of its divisors is an integer number (13122837826560).

Almost surely, 2^{200221212220021} is an apocalyptic number.

It is an amenable number.

200221212220021 is a deficient number, since it is larger than the sum of its proper divisors (9744193004939).

200221212220021 is a wasteful number, since it uses less digits than its factorization.

200221212220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295879656.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 200221212220021 its reverse (120022212122002), we get a palindrome (320243424342023).

The spelling of 200221212220021 in words is "two hundred trillion, two hundred twenty-one billion, two hundred twelve million, two hundred twenty thousand, twenty-one".