102850021 has 8 divisors (see below), whose sum is σ = 109635200. Its totient is φ = 96202080.

The previous prime is 102849991. The next prime is 102850049. The reversal of 102850021 is 120058201.

102850021 = T₈₂₇₉ + T₈₂₈₀ + T₈₂₈₁.

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 102850021 - 2¹⁹ = 102325733 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102854021) 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, 32760 + ... + 35761.

It is an arithmetic number, because the mean of its divisors is an integer number (13704400).

Almost surely, 2^102850021 is an apocalyptic number.

102850021 is the 8281-st centered triangular number.

It is an amenable number.

102850021 is a deficient number, since it is larger than the sum of its proper divisors (6785179).

102850021 is an equidigital number, since it uses as much as digits as its factorization.

102850021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68619.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 102850021 is about 10141.4999383720. The cubic root of 102850021 is about 468.5271852214.

The spelling of 102850021 in words is "one hundred two million, eight hundred fifty thousand, twenty-one".