211211101102020 has 96 divisors (see below), whose sum is σ = 614176370024448. Its totient is φ = 54192032560512.

The previous prime is 211211101101989. The next prime is 211211101102051. The reversal of 211211101102020 is 20201101112112.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (211211101101989) and next prime (211211101102051).

It is a super-2 number, since 2×211211101102020² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 610758244 + ... + 611103963.

It is an arithmetic number, because the mean of its divisors is an integer number (6397670521088).

Almost surely, 2^{211211101102020} is an apocalyptic number.

211211101102020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211211101102020 is an abundant number, since it is smaller than the sum of its proper divisors (402965268922428).

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

211211101102020 is a wasteful number, since it uses less digits than its factorization.

211211101102020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221862329 (or 1221862327 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 211211101102020 its reverse (20201101112112), we get a palindrome (231412202214132).

The spelling of 211211101102020 in words is "two hundred eleven trillion, two hundred eleven billion, one hundred one million, one hundred two thousand, twenty".