1100211020 has 24 divisors (see below), whose sum is σ = 2344930224. Its totient is φ = 433515456.

The previous prime is 1100211001. The next prime is 1100211023. The reversal of 1100211020 is 201120011.

It is a junction number, because it is equal to n+sod(n) for n = 1100210989 and 1100211007.

It is not an unprimeable number, because it can be changed into a prime (1100211023) 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, 409187 + ... + 411866.

It is an arithmetic number, because the mean of its divisors is an integer number (97705426).

Almost surely, 2^1100211020 is an apocalyptic number.

1100211020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100211020 is an abundant number, since it is smaller than the sum of its proper divisors (1244719204).

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

1100211020 is a wasteful number, since it uses less digits than its factorization.

1100211020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821129 (or 821127 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 1100211020 is about 33169.4289971956. The cubic root of 1100211020 is about 1032.3461208570.

Adding to 1100211020 its reverse (201120011), we get a palindrome (1301331031).

It can be divided in two parts, 11002 and 11020, that added together give a palindrome (22022).

The spelling of 1100211020 in words is "one billion, one hundred million, two hundred eleven thousand, twenty".