110101021020 has 72 divisors (see below), whose sum is σ = 351550639440. Its totient is φ = 27814993920.

The previous prime is 110101020989. The next prime is 110101021087. The reversal of 110101021020 is 20120101011.

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 = 110101020993 and 110101021011.

It is a congruent number.

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, 16093221 + ... + 16100060.

It is an arithmetic number, because the mean of its divisors is an integer number (4882647770).

Almost surely, 2^110101021020 is an apocalyptic number.

110101021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

110101021020 is an abundant number, since it is smaller than the sum of its proper divisors (241449618420).

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

110101021020 is a wasteful number, since it uses less digits than its factorization.

110101021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32193315 (or 32193310 counting only the distinct ones).

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

Adding to 110101021020 its reverse (20120101011), we get a palindrome (130221122031).

The spelling of 110101021020 in words is "one hundred ten billion, one hundred one million, twenty-one thousand, twenty".