211201020122021 has 16 divisors (see below), whose sum is σ = 213052851211200. Its totient is φ = 209354131260288.

The previous prime is 211201020122011. The next prime is 211201020122033. The reversal of 211201020122021 is 120221020102112.

It is a cyclic number.

It is not a de Polignac number, because 211201020122021 - 2¹⁴ = 211201020105637 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 (211201020122011) 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, 302104151 + ... + 302802443.

It is an arithmetic number, because the mean of its divisors is an integer number (13315803200700).

Almost surely, 2^{211201020122021} is an apocalyptic number.

It is an amenable number.

211201020122021 is a deficient number, since it is larger than the sum of its proper divisors (1851831089179).

211201020122021 is a wasteful number, since it uses less digits than its factorization.

211201020122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701828.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 211201020122021 its reverse (120221020102112), we get a palindrome (331422040224133).

The spelling of 211201020122021 in words is "two hundred eleven trillion, two hundred one billion, twenty million, one hundred twenty-two thousand, twenty-one".