211012020221 has 8 divisors (see below), whose sum is σ = 214769348640. Its totient is φ = 207260720368.

The previous prime is 211012020151. The next prime is 211012020227. The reversal of 211012020221 is 122020210112.

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 211012020221 - 2¹⁸ = 211011758077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211012020196 and 211012020205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211012020227) 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, 1436486 + ... + 1576551.

It is an arithmetic number, because the mean of its divisors is an integer number (26846168580).

Almost surely, 2^211012020221 is an apocalyptic number.

It is an amenable number.

211012020221 is a deficient number, since it is larger than the sum of its proper divisors (3757328419).

211012020221 is a wasteful number, since it uses less digits than its factorization.

211012020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3014283.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 211012020221 its reverse (122020210112), we get a palindrome (333032230333).

The spelling of 211012020221 in words is "two hundred eleven billion, twelve million, twenty thousand, two hundred twenty-one".