1121210020001 has 8 divisors (see below), whose sum is σ = 1121860068840. Its totient is φ = 1120560158848.

The previous prime is 1121210019983. The next prime is 1121210020079. The reversal of 1121210020001 is 1000200121211.

It can be written as a sum of positive squares in 4 ways, for example, as 150640239376 + 970569780625 = 388124^2 + 985175^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1121210020001 - 2³⁸ = 846332113057 is a prime.

It is a super-2 number, since 2×1121210020001² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121210020501) 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, 12922175 + ... + 13008651.

It is an arithmetic number, because the mean of its divisors is an integer number (140232508605).

Almost surely, 2^{1121210020001} is an apocalyptic number.

It is an amenable number.

1121210020001 is a deficient number, since it is larger than the sum of its proper divisors (650048839).

1121210020001 is an equidigital number, since it uses as much as digits as its factorization.

1121210020001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93843.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1121210020001 its reverse (1000200121211), we get a palindrome (2121410141212).

The spelling of 1121210020001 in words is "one trillion, one hundred twenty-one billion, two hundred ten million, twenty thousand, one".