1011123031212 has 96 divisors (see below), whose sum is σ = 2996496921600. Its totient is φ = 288836672256.

The previous prime is 1011123031211. The next prime is 1011123031213. The reversal of 1011123031212 is 2121303211101.

1011123031212 is a `hidden beast` number, since 1 + 0 + 111 + 230 + 312 + 12 = 666.

1011123031212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1011123031211) and next prime (1011123031213).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1011123031211) 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, 3882964 + ... + 4135172.

It is an arithmetic number, because the mean of its divisors is an integer number (31213509600).

Almost surely, 2^{1011123031212} is an apocalyptic number.

1011123031212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1011123031212 is an abundant number, since it is smaller than the sum of its proper divisors (1985373890388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1011123031212 is a wasteful number, since it uses less digits than its factorization.

1011123031212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257532 (or 257524 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1011123031212 its reverse (2121303211101), we get a palindrome (3132426242313).

The spelling of 1011123031212 in words is "one trillion, eleven billion, one hundred twenty-three million, thirty-one thousand, two hundred twelve".