10220121012 has 24 divisors (see below), whose sum is σ = 23984797536. Its totient is φ = 3387014368.

The previous prime is 10220121007. The next prime is 10220121029. The reversal of 10220121012 is 21012102201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2459418 + ... + 2463569.

It is an arithmetic number, because the mean of its divisors is an integer number (999366564).

Almost surely, 2^10220121012 is an apocalyptic number.

10220121012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10220121012 is an abundant number, since it is smaller than the sum of its proper divisors (13764676524).

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

10220121012 is a wasteful number, since it uses less digits than its factorization.

10220121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4923167 (or 4923165 counting only the distinct ones).

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

Adding to 10220121012 its reverse (21012102201), we get a palindrome (31232223213).

It can be divided in two parts, 102201 and 21012, that multiplied together give a palindrome (2147447412).

The spelling of 10220121012 in words is "ten billion, two hundred twenty million, one hundred twenty-one thousand, twelve".