211450101220 has 48 divisors (see below), whose sum is σ = 450983328768. Its totient is φ = 83260235520.

The previous prime is 211450101209. The next prime is 211450101221. The reversal of 211450101220 is 22101054112.

It is a super-2 number, since 2×211450101220² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211450101221) 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, 1917504 + ... + 2024776.

It is an arithmetic number, because the mean of its divisors is an integer number (9395486016).

Almost surely, 2^211450101220 is an apocalyptic number.

211450101220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211450101220 is an abundant number, since it is smaller than the sum of its proper divisors (239533227548).

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

211450101220 is a wasteful number, since it uses less digits than its factorization.

211450101220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108820 (or 108818 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

Adding to 211450101220 its reverse (22101054112), we get a palindrome (233551155332).

The spelling of 211450101220 in words is "two hundred eleven billion, four hundred fifty million, one hundred one thousand, two hundred twenty".