211100220021022 has 4 divisors (see below), whose sum is σ = 316650330031536. Its totient is φ = 105550110010510.

The previous prime is 211100220020909. The next prime is 211100220021023. The reversal of 211100220021022 is 220120022001112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 211100220020987 and 211100220021005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211100220021023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52775055005254 + ... + 52775055005257.

It is an arithmetic number, because the mean of its divisors is an integer number (79162582507884).

Almost surely, 2^{211100220021022} is an apocalyptic number.

211100220021022 is a deficient number, since it is larger than the sum of its proper divisors (105550110010514).

211100220021022 is a wasteful number, since it uses less digits than its factorization.

211100220021022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105550110010513.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 211100220021022 its reverse (220120022001112), we get a palindrome (431220242022134).

The spelling of 211100220021022 in words is "two hundred eleven trillion, one hundred billion, two hundred twenty million, twenty-one thousand, twenty-two".