102213154 has 4 divisors (see below), whose sum is σ = 153319734. Its totient is φ = 51106576.

The previous prime is 102213151. The next prime is 102213187. The reversal of 102213154 is 451312201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 451312201 = 67 ⋅6736003.

It can be written as a sum of positive squares in only one way, i.e., 64722025 + 37491129 = 8045^2 + 6123^2 .

It is not an unprimeable number, because it can be changed into a prime (102213151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25553287 + ... + 25553290.

Almost surely, 2^102213154 is an apocalyptic number.

102213154 is a deficient number, since it is larger than the sum of its proper divisors (51106580).

102213154 is an equidigital number, since it uses as much as digits as its factorization.

102213154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51106579.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 102213154 is about 10110.0521264729. The cubic root of 102213154 is about 467.5581122533.

Adding to 102213154 its reverse (451312201), we get a palindrome (553525355).

The spelling of 102213154 in words is "one hundred two million, two hundred thirteen thousand, one hundred fifty-four".