212003211211220 has 48 divisors (see below), whose sum is σ = 523040090323968. Its totient is φ = 71161917048960.

The previous prime is 212003211211199. The next prime is 212003211211237. The reversal of 212003211211220 is 22112112300212.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 212003211211192 and 212003211211201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37063495604 + ... + 37063501323.

It is an arithmetic number, because the mean of its divisors is an integer number (10896668548416).

Almost surely, 2^{212003211211220} is an apocalyptic number.

212003211211220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212003211211220 is an abundant number, since it is smaller than the sum of its proper divisors (311036879112748).

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

212003211211220 is a wasteful number, since it uses less digits than its factorization.

212003211211220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74126996960 (or 74126996958 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 212003211211220 its reverse (22112112300212), we get a palindrome (234115323511432).

The spelling of 212003211211220 in words is "two hundred twelve trillion, three billion, two hundred eleven million, two hundred eleven thousand, two hundred twenty".