20021203121210 has 32 divisors (see below), whose sum is σ = 36642429734400. Its totient is φ = 7874296925760.

The previous prime is 20021203121201. The next prime is 20021203121219. The reversal of 20021203121210 is 1212130212002.

It is an interprime number because it is at equal distance from previous prime (20021203121201) and next prime (20021203121219).

It is not an unprimeable number, because it can be changed into a prime (20021203121219) 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, 4377020 + ... + 7694199.

It is an arithmetic number, because the mean of its divisors is an integer number (1145075929200).

Almost surely, 2^{20021203121210} is an apocalyptic number.

20021203121210 is a deficient number, since it is larger than the sum of its proper divisors (16621226613190).

20021203121210 is a wasteful number, since it uses less digits than its factorization.

20021203121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12074006.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20021203121210 its reverse (1212130212002), we get a palindrome (21233333333212).

The spelling of 20021203121210 in words is "twenty trillion, twenty-one billion, two hundred three million, one hundred twenty-one thousand, two hundred ten".