1211010140423 has 16 divisors (see below), whose sum is σ = 1270413014976. Its totient is φ = 1152184999680.

The previous prime is 1211010140401. The next prime is 1211010140437. The reversal of 1211010140423 is 3240410101121.

It is a cyclic number.

It is not a de Polignac number, because 1211010140423 - 2⁶ = 1211010140359 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1211010140395 and 1211010140404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211010140453) 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, 3338561 + ... + 3683477.

It is an arithmetic number, because the mean of its divisors is an integer number (79400813436).

Almost surely, 2^{1211010140423} is an apocalyptic number.

1211010140423 is a deficient number, since it is larger than the sum of its proper divisors (59402874553).

1211010140423 is a wasteful number, since it uses less digits than its factorization.

1211010140423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345754.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 1211010140423 its reverse (3240410101121), we get a palindrome (4451420241544).

The spelling of 1211010140423 in words is "one trillion, two hundred eleven billion, ten million, one hundred forty thousand, four hundred twenty-three".