211121012222220 has 48 divisors (see below), whose sum is σ = 603716256235008. Its totient is φ = 55101086877120.

The previous prime is 211121012222203. The next prime is 211121012222221. The reversal of 211121012222220 is 22222210121112.

It is not an unprimeable number, because it can be changed into a prime (211121012222221) 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, 37432800766 + ... + 37432806405.

It is an arithmetic number, because the mean of its divisors is an integer number (12577422004896).

Almost surely, 2^{211121012222220} is an apocalyptic number.

211121012222220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211121012222220 is an abundant number, since it is smaller than the sum of its proper divisors (392595244012788).

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

211121012222220 is a wasteful number, since it uses less digits than its factorization.

211121012222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74865607230 (or 74865607228 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 211121012222220 its reverse (22222210121112), we get a palindrome (233343222343332).

The spelling of 211121012222220 in words is "two hundred eleven trillion, one hundred twenty-one billion, twelve million, two hundred twenty-two thousand, two hundred twenty".