1211001012023 has 32 divisors (see below), whose sum is σ = 1376596710720. Its totient is φ = 1055232640000.

The previous prime is 1211001012017. The next prime is 1211001012103. The reversal of 1211001012023 is 3202101001121.

It is not a de Polignac number, because 1211001012023 - 2⁶ = 1211001011959 is a prime.

It is a super-2 number, since 2×1211001012023² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1211001011989 and 1211001012007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211001012323) 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, 28949723 + ... + 28991523.

It is an arithmetic number, because the mean of its divisors is an integer number (43018647210).

Almost surely, 2^{1211001012023} is an apocalyptic number.

1211001012023 is a deficient number, since it is larger than the sum of its proper divisors (165595698697).

1211001012023 is a wasteful number, since it uses less digits than its factorization.

1211001012023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42499.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1211001012023 its reverse (3202101001121), we get a palindrome (4413102013144).

The spelling of 1211001012023 in words is "one trillion, two hundred eleven billion, one million, twelve thousand, twenty-three".