1121001202123 has 16 divisors (see below), whose sum is σ = 1293560994816. Its totient is φ = 961430437440.

The previous prime is 1121001202109. The next prime is 1121001202147. The reversal of 1121001202123 is 3212021001211.

It is not a de Polignac number, because 1121001202123 - 2²¹ = 1120999104971 is a prime.

It is a super-2 number, since 2×1121001202123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121001202097 and 1121001202106.

It is not an unprimeable number, because it can be changed into a prime (1121001202163) 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, 30329715 + ... + 30366652.

It is an arithmetic number, because the mean of its divisors is an integer number (80847562176).

Almost surely, 2^{1121001202123} is an apocalyptic number.

1121001202123 is a deficient number, since it is larger than the sum of its proper divisors (172559792693).

1121001202123 is a wasteful number, since it uses less digits than its factorization.

1121001202123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60696474.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1121001202123 its reverse (3212021001211), we get a palindrome (4333022203334).

The spelling of 1121001202123 in words is "one trillion, one hundred twenty-one billion, one million, two hundred two thousand, one hundred twenty-three".