2001121001122 has 8 divisors (see below), whose sum is σ = 3178251001836. Its totient is φ = 941704000512.

The previous prime is 2001121001083. The next prime is 2001121001153. The reversal of 2001121001122 is 2211001211002.

It can be written as a sum of positive squares in 2 ways, for example, as 1841337727681 + 159783273441 = 1356959^2 + 399729^2 .

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

It is a super-2 number, since 2×2001121001122² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29428249983 + ... + 29428250050.

Almost surely, 2^{2001121001122} is an apocalyptic number.

2001121001122 is a deficient number, since it is larger than the sum of its proper divisors (1177130000714).

2001121001122 is a wasteful number, since it uses less digits than its factorization.

2001121001122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58856500052.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2001121001122 its reverse (2211001211002), we get a palindrome (4212122212124).

The spelling of 2001121001122 in words is "two trillion, one billion, one hundred twenty-one million, one thousand, one hundred twenty-two".