1021101012 has 24 divisors (see below), whose sum is σ = 2647299200. Its totient is φ = 340366968.

The previous prime is 1021101001. The next prime is 1021101017. The reversal of 1021101012 is 2101011201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1021100985 and 1021101003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021101017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4727212 + ... + 4727427.

Almost surely, 2^1021101012 is an apocalyptic number.

1021101012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1021101012 is an abundant number, since it is smaller than the sum of its proper divisors (1626198188).

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

1021101012 is a wasteful number, since it uses less digits than its factorization.

1021101012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9454652 (or 9454644 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 1021101012 is about 31954.6712078219. The cubic root of 1021101012 is about 1006.9847700651.

Adding to 1021101012 its reverse (2101011201), we get a palindrome (3122112213).

The spelling of 1021101012 in words is "one billion, twenty-one million, one hundred one thousand, twelve".