1021110020190 has 96 divisors (see below), whose sum is σ = 2859301632096. Its totient is φ = 251333141760.

The previous prime is 1021110020093. The next prime is 1021110020191. The reversal of 1021110020190 is 910200111201.

It is a happy number.

It is a super-2 number, since 2×1021110020190² (a number of 25 digits) contains 22 as substring.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021110020191) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34173637 + ... + 34203503.

It is an arithmetic number, because the mean of its divisors is an integer number (29784392001).

Almost surely, 2^{1021110020190} is an apocalyptic number.

1021110020190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021110020190 is an abundant number, since it is smaller than the sum of its proper divisors (1838191611906).

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

1021110020190 is a wasteful number, since it uses less digits than its factorization.

1021110020190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59114 (or 59111 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

Adding to 1021110020190 its reverse (910200111201), we get a palindrome (1931310131391).

The spelling of 1021110020190 in words is "one trillion, twenty-one billion, one hundred ten million, twenty thousand, one hundred ninety".