102020151 has 8 divisors (see below), whose sum is σ = 136940400. Its totient is φ = 67556672.

The previous prime is 102020147. The next prime is 102020153. The reversal of 102020151 is 151020201.

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 102020151 - 2² = 102020147 is a prime.

It is a super-2 number, since 2×102020151² = 20816222420125602, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102020153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113670 + ... + 114563.

It is an arithmetic number, because the mean of its divisors is an integer number (17117550).

Almost surely, 2^102020151 is an apocalyptic number.

102020151 is a deficient number, since it is larger than the sum of its proper divisors (34920249).

102020151 is a wasteful number, since it uses less digits than its factorization.

102020151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228385.

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 102020151 is about 10100.5025122516. The cubic root of 102020151 is about 467.2636394684.

Adding to 102020151 its reverse (151020201), we get a palindrome (253040352).

Subtracting 102020151 from its reverse (151020201), we obtain a triangular number (49000050 = T₉₈₉₉).

The spelling of 102020151 in words is "one hundred two million, twenty thousand, one hundred fifty-one".