1011231121030 has 64 divisors (see below), whose sum is σ = 2103972833088. Its totient is φ = 346600304640.

The previous prime is 1011231120989. The next prime is 1011231121037. The reversal of 1011231121030 is 301211321101.

It is a happy number.

1011231121030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1011231120995 and 1011231121013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011231121037) 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, 2972716 + ... + 3295375.

It is an arithmetic number, because the mean of its divisors is an integer number (32874575517).

Almost surely, 2^{1011231121030} is an apocalyptic number.

1011231121030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1011231121030 is an abundant number, since it is smaller than the sum of its proper divisors (1092741712058).

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

1011231121030 is a wasteful number, since it uses less digits than its factorization.

1011231121030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6268201.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1011231121030 its reverse (301211321101), we get a palindrome (1312442442131).

The spelling of 1011231121030 in words is "one trillion, eleven billion, two hundred thirty-one million, one hundred twenty-one thousand, thirty".