1011021372 has 24 divisors (see below), whose sum is σ = 2621166800. Its totient is φ = 337007088.

The previous prime is 1011021359. The next prime is 1011021377. The reversal of 1011021372 is 2731201101.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011021377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4680547 + ... + 4680762.

Almost surely, 2^1011021372 is an apocalyptic number.

1011021372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1011021372 is an abundant number, since it is smaller than the sum of its proper divisors (1610145428).

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

1011021372 is a wasteful number, since it uses less digits than its factorization.

1011021372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9361322 (or 9361314 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The square root of 1011021372 is about 31796.5622670125. The cubic root of 1011021372 is about 1003.6603759668.

Adding to 1011021372 its reverse (2731201101), we get a palindrome (3742222473).

The spelling of 1011021372 in words is "one billion, eleven million, twenty-one thousand, three hundred seventy-two".