211000120022021 has 32 divisors (see below), whose sum is σ = 246196123729920. Its totient is φ = 178895629756800.

The previous prime is 211000120021973. The next prime is 211000120022023. The reversal of 211000120022021 is 120220021000112.

It is a de Polignac number, because none of the positive numbers 2^k-211000120022021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211000120021987 and 211000120022005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211000120022023) 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, 11134460 + ... + 23366138.

It is an arithmetic number, because the mean of its divisors is an integer number (7693628866560).

Almost surely, 2^{211000120022021} is an apocalyptic number.

It is an amenable number.

211000120022021 is a deficient number, since it is larger than the sum of its proper divisors (35196003707899).

211000120022021 is a wasteful number, since it uses less digits than its factorization.

211000120022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12233417.

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

Adding to 211000120022021 its reverse (120220021000112), we get a palindrome (331220141022133).

The spelling of 211000120022021 in words is "two hundred eleven trillion, one hundred twenty million, twenty-two thousand, twenty-one".