101220012010 has 16 divisors (see below), whose sum is σ = 196211100456. Its totient is φ = 37373542848.

The previous prime is 101220011993. The next prime is 101220012013. The reversal of 101220012010 is 10210022101.

It can be written as a sum of positive squares in 4 ways, for example, as 42468554241 + 58751457769 = 206079^2 + 242387^2 .

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 (101220012013) 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, 389307609 + ... + 389307868.

Almost surely, 2^101220012010 is an apocalyptic number.

101220012010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101220012010 is a deficient number, since it is larger than the sum of its proper divisors (94991088446).

101220012010 is a wasteful number, since it uses less digits than its factorization.

101220012010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778615497.

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

Adding to 101220012010 its reverse (10210022101), we get a palindrome (111430034111).

The spelling of 101220012010 in words is "one hundred one billion, two hundred twenty million, twelve thousand, ten".