102011021010 has 48 divisors (see below), whose sum is σ = 265285500480. Its totient is φ = 27197108640.

The previous prime is 102011020997. The next prime is 102011021011. The reversal of 102011021010 is 10120110201.

It is a happy number.

It is a super-2 number, since 2×102011021010² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 102011020983 and 102011021001.

It is not an unprimeable number, because it can be changed into a prime (102011021011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 309225 + ... + 547395.

It is an arithmetic number, because the mean of its divisors is an integer number (5526781260).

Almost surely, 2^102011021010 is an apocalyptic number.

102011021010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102011021010 is an abundant number, since it is smaller than the sum of its proper divisors (163274479470).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102011021010 is a wasteful number, since it uses less digits than its factorization.

102011021010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242943 (or 242940 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 102011021010 its reverse (10120110201), we get a palindrome (112131131211).

The spelling of 102011021010 in words is "one hundred two billion, eleven million, twenty-one thousand, ten".