1200222021210 has 32 divisors (see below), whose sum is σ = 2921103741312. Its totient is φ = 315551328960.

The previous prime is 1200222021107. The next prime is 1200222021217. The reversal of 1200222021210 is 121202220021.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1200222021210.

It is not an unprimeable number, because it can be changed into a prime (1200222021217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 281740129 + ... + 281744388.

It is an arithmetic number, because the mean of its divisors is an integer number (91284491916).

Almost surely, 2^{1200222021210} is an apocalyptic number.

1200222021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1200222021210 is an abundant number, since it is smaller than the sum of its proper divisors (1720881720102).

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

1200222021210 is a wasteful number, since it uses less digits than its factorization.

1200222021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563484598.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1200222021210 its reverse (121202220021), we get a palindrome (1321424241231).

The spelling of 1200222021210 in words is "one trillion, two hundred billion, two hundred twenty-two million, twenty-one thousand, two hundred ten".