1901101122 has 54 divisors (see below), whose sum is σ = 4234790547. Its totient is φ = 616373352.

The previous prime is 1901101057. The next prime is 1901101141. The reversal of 1901101122 is 2211011091.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 950550561 + 950550561 = 30831^2 + 30831^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=30831.

It is a super-2 number, since 2×1901101122² = 7228370952139317768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1901101095 and 1901101104.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 7954279 + ... + 7954517.

Almost surely, 2^1901101122 is an apocalyptic number.

1901101122 is an abundant number, since it is smaller than the sum of its proper divisors (2333689425).

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

1901101122 is an equidigital number, since it uses as much as digits as its factorization.

1901101122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

The square root of 1901101122 is about 43601.6183415249. The cubic root of 1901101122 is about 1238.8015480258.

Multiplying 1901101122 by its sum of digits (18), we get a square (34219820196 = 184986²).

1901101122 divided by its sum of digits (18) gives a square (105616729 = 10277²).

The spelling of 1901101122 in words is "one billion, nine hundred one million, one hundred one thousand, one hundred twenty-two".