1001202012123 has 8 divisors (see below), whose sum is σ = 1334940637968. Its totient is φ = 667465697184.

The previous prime is 1001202012121. The next prime is 1001202012127. The reversal of 1001202012123 is 3212102021001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1001202012123 - 2¹ = 1001202012121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1001202012121) 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, 1424461 + ... + 2007857.

It is an arithmetic number, because the mean of its divisors is an integer number (166867579746).

Almost surely, 2^{1001202012123} is an apocalyptic number.

1001202012123 is a deficient number, since it is larger than the sum of its proper divisors (333738625845).

1001202012123 is an equidigital number, since it uses as much as digits as its factorization.

1001202012123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155453.

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

Adding to 1001202012123 its reverse (3212102021001), we get a palindrome (4213304033124).

The spelling of 1001202012123 in words is "one trillion, one billion, two hundred two million, twelve thousand, one hundred twenty-three".