211220011000 has 32 divisors (see below), whose sum is σ = 494254828080. Its totient is φ = 84488004000.

The previous prime is 211220010983. The next prime is 211220011001. The reversal of 211220011000 is 110022112.

It is a super-2 number, since 2×211220011000² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211220011001) 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, 105609006 + ... + 105611005.

Almost surely, 2^211220011000 is an apocalyptic number.

211220011000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211220011000 is an abundant number, since it is smaller than the sum of its proper divisors (283034817080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211220011000 is a wasteful number, since it uses less digits than its factorization.

211220011000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211220032 (or 211220018 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 211220011000 its reverse (110022112), we get a palindrome (211330033112).

The spelling of 211220011000 in words is "two hundred eleven billion, two hundred twenty million, eleven thousand".