211000220022021 has 32 divisors (see below), whose sum is σ = 288740557243008. Its totient is φ = 137009524995840.

The previous prime is 211000220021953. The next prime is 211000220022079. The reversal of 211000220022021 is 120220022000112.

It is not a de Polignac number, because 211000220022021 - 2¹¹ = 211000220019973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211000220022421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43866511 + ... + 48438323.

It is an arithmetic number, because the mean of its divisors is an integer number (9023142413844).

Almost surely, 2^{211000220022021} is an apocalyptic number.

It is an amenable number.

211000220022021 is a deficient number, since it is larger than the sum of its proper divisors (77740337220987).

211000220022021 is a wasteful number, since it uses less digits than its factorization.

211000220022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4574341.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 211000220022021 its reverse (120220022000112), we get a palindrome (331220242022133).

The spelling of 211000220022021 in words is "two hundred eleven trillion, two hundred twenty million, twenty-two thousand, twenty-one".