101021200110 has 160 divisors (see below), whose sum is σ = 279183288384. Its totient is φ = 26194752000.

The previous prime is 101021200097. The next prime is 101021200123. The reversal of 101021200110 is 11002120101.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (101021200097) and next prime (101021200123).

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 101021200092 and 101021200101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 10323420 + ... + 10333200.

Almost surely, 2^101021200110 is an apocalyptic number.

101021200110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 101021200110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139591644192).

101021200110 is an abundant number, since it is smaller than the sum of its proper divisors (178162088274).

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

101021200110 is a wasteful number, since it uses less digits than its factorization.

101021200110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10152 (or 10143 counting only the distinct ones).

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

Adding to 101021200110 its reverse (11002120101), we get a palindrome (112023320211).

The spelling of 101021200110 in words is "one hundred one billion, twenty-one million, two hundred thousand, one hundred ten".