102120021010 has 16 divisors (see below), whose sum is σ = 210075471936. Its totient is φ = 35012578608.

The previous prime is 102120020983. The next prime is 102120021011. The reversal of 102120021010 is 10120021201.

It is a super-3 number, since 3×102120021010³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (102120021011) 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, 729428652 + ... + 729428791.

It is an arithmetic number, because the mean of its divisors is an integer number (13129716996).

Almost surely, 2^102120021010 is an apocalyptic number.

102120021010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102120021010 is an abundant number, since it is smaller than the sum of its proper divisors (107955450926).

102120021010 is a wasteful number, since it uses less digits than its factorization.

102120021010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1458857457.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 102120021010 its reverse (10120021201), we get a palindrome (112240042211).

The spelling of 102120021010 in words is "one hundred two billion, one hundred twenty million, twenty-one thousand, ten".