1001002232121 has 32 divisors (see below), whose sum is σ = 1385558154240. Its totient is φ = 642054905856.

The previous prime is 1001002232059. The next prime is 1001002232137. The reversal of 1001002232121 is 1212322001001.

It is not a de Polignac number, because 1001002232121 - 2⁷ = 1001002231993 is a prime.

It is a super-2 number, since 2×1001002232121² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1001002232121.

It is not an unprimeable number, because it can be changed into a prime (1001002232921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59127960 + ... + 59144886.

It is an arithmetic number, because the mean of its divisors is an integer number (43298692320).

Almost surely, 2^{1001002232121} is an apocalyptic number.

It is an amenable number.

1001002232121 is a deficient number, since it is larger than the sum of its proper divisors (384555922119).

1001002232121 is a wasteful number, since it uses less digits than its factorization.

1001002232121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19313.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1001002232121 its reverse (1212322001001), we get a palindrome (2213324233122).

The spelling of 1001002232121 in words is "one trillion, one billion, two million, two hundred thirty-two thousand, one hundred twenty-one".