102421011 has 32 divisors (see below), whose sum is σ = 176140800. Its totient is φ = 51367680.

The previous prime is 102420973. The next prime is 102421019. The reversal of 102421011 is 110124201.

It is a happy number.

It is not a de Polignac number, because 102421011 - 2⁶ = 102420947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102421019) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 946 + ... + 14343.

It is an arithmetic number, because the mean of its divisors is an integer number (5504400).

Almost surely, 2^102421011 is an apocalyptic number.

102421011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

102421011 is a deficient number, since it is larger than the sum of its proper divisors (73719789).

102421011 is a wasteful number, since it uses less digits than its factorization.

102421011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15339.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 102421011 is about 10120.3266251638. The cubic root of 102421011 is about 467.8748341220.

Adding to 102421011 its reverse (110124201), we get a palindrome (212545212).

The spelling of 102421011 in words is "one hundred two million, four hundred twenty-one thousand, eleven".