1001122121210 has 32 divisors (see below), whose sum is σ = 1820505158784. Its totient is φ = 396343800000.

The previous prime is 1001122121191. The next prime is 1001122121213. The reversal of 1001122121210 is 121212211001.

It is not an unprimeable number, because it can be changed into a prime (1001122121213) 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, 2705675 + ... + 3053345.

It is an arithmetic number, because the mean of its divisors is an integer number (56890786212).

Almost surely, 2^{1001122121210} is an apocalyptic number.

1001122121210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1001122121210 is a deficient number, since it is larger than the sum of its proper divisors (819383037574).

1001122121210 is a wasteful number, since it uses less digits than its factorization.

1001122121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350630.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1001122121210 its reverse (121212211001), we get a palindrome (1122334332211).

The spelling of 1001122121210 in words is "one trillion, one billion, one hundred twenty-two million, one hundred twenty-one thousand, two hundred ten".