1001121102 has 24 divisors (see below), whose sum is σ = 2201472936. Its totient is φ = 328725936.

The previous prime is 1001121089. The next prime is 1001121119. The reversal of 1001121102 is 2011211001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 413853 + ... + 416264.

It is an arithmetic number, because the mean of its divisors is an integer number (91728039).

Almost surely, 2^1001121102 is an apocalyptic number.

1001121102 is an abundant number, since it is smaller than the sum of its proper divisors (1200351834).

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

1001121102 is a wasteful number, since it uses less digits than its factorization.

1001121102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830192 (or 830189 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 1001121102 is about 31640.4978152999. The cubic root of 1001121102 is about 1000.3735611014.

Adding to 1001121102 its reverse (2011211001), we get a palindrome (3012332103).

It can be divided in two parts, 10011 and 21102, that added together give a palindrome (31113).

The spelling of 1001121102 in words is "one billion, one million, one hundred twenty-one thousand, one hundred two".