1121002121001 has 32 divisors (see below), whose sum is σ = 1725313072896. Its totient is φ = 634154400000.

The previous prime is 1121002120999. The next prime is 1121002121021. The reversal of 1121002121001 is 1001212001211.

It is not a de Polignac number, because 1121002121001 - 2¹ = 1121002120999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121002121021) 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, 20973331 + ... + 21026711.

It is an arithmetic number, because the mean of its divisors is an integer number (53916033528).

Almost surely, 2^{1121002121001} is an apocalyptic number.

It is an amenable number.

1121002121001 is a deficient number, since it is larger than the sum of its proper divisors (604310951895).

1121002121001 is a wasteful number, since it uses less digits than its factorization.

1121002121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63393.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1121002121001 its reverse (1001212001211), we get a palindrome (2122214122212).

The spelling of 1121002121001 in words is "one trillion, one hundred twenty-one billion, two million, one hundred twenty-one thousand, one".