11021021010 has 48 divisors (see below), whose sum is σ = 28732818816. Its totient is φ = 2930922144.

The previous prime is 11021020991. The next prime is 11021021027. The reversal of 11021021010 is 1012012011.

It is a happy number.

It is a super-2 number, since 2×11021021010² (a number of 21 digits) contains 22 as substring.

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 = 11021020983 and 11021021001.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133804 + ... + 199863.

It is an arithmetic number, because the mean of its divisors is an integer number (598600392).

Almost surely, 2^11021021010 is an apocalyptic number.

11021021010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11021021010 is an abundant number, since it is smaller than the sum of its proper divisors (17711797806).

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

11021021010 is a wasteful number, since it uses less digits than its factorization.

11021021010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334047 (or 334044 counting only the distinct ones).

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

Adding to 11021021010 its reverse (1012012011), we get a palindrome (12033033021).

The spelling of 11021021010 in words is "eleven billion, twenty-one million, twenty-one thousand, ten".