2011201021123 has 16 divisors (see below), whose sum is σ = 2473619338944. Its totient is φ = 1595883432960.

The previous prime is 2011201021091. The next prime is 2011201021133. The reversal of 2011201021123 is 3211201021102.

It is a cyclic number.

It is not a de Polignac number, because 2011201021123 - 2⁵ = 2011201021091 is a prime.

It is a super-2 number, since 2×2011201021123² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2011201021097 and 2011201021106.

It is not an unprimeable number, because it can be changed into a prime (2011201021133) 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, 138524290 + ... + 138538807.

It is an arithmetic number, because the mean of its divisors is an integer number (154601208684).

Almost surely, 2^{2011201021123} is an apocalyptic number.

2011201021123 is a deficient number, since it is larger than the sum of its proper divisors (462418317821).

2011201021123 is a wasteful number, since it uses less digits than its factorization.

2011201021123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277063182.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 2011201021123 its reverse (3211201021102), we get a palindrome (5222402042225).

The spelling of 2011201021123 in words is "two trillion, eleven billion, two hundred one million, twenty-one thousand, one hundred twenty-three".