1102102100021 has 8 divisors (see below), whose sum is σ = 1187369057280. Its totient is φ = 1016905124592.

The previous prime is 1102102100003. The next prime is 1102102100027. The reversal of 1102102100021 is 1200012012011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1102102100021 - 2¹⁰ = 1102102098997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1102102099975 and 1102102100011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102102100027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17462741 + ... + 17525738.

It is an arithmetic number, because the mean of its divisors is an integer number (148421132160).

Almost surely, 2^{1102102100021} is an apocalyptic number.

It is an amenable number.

1102102100021 is a deficient number, since it is larger than the sum of its proper divisors (85266957259).

1102102100021 is a wasteful number, since it uses less digits than its factorization.

1102102100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34990915.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1102102100021 its reverse (1200012012011), we get a palindrome (2302114112032).

The spelling of 1102102100021 in words is "one trillion, one hundred two billion, one hundred two million, one hundred thousand, twenty-one".