212202551000 has 256 divisors, whose sum is σ = 576201600000. Its totient is φ = 72291072000.

The previous prime is 212202550999. The next prime is 212202551059. The reversal of 212202551000 is 155202212.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 42446501 + ... + 42451499.

It is an arithmetic number, because the mean of its divisors is an integer number (2250787500).

Almost surely, 2^212202551000 is an apocalyptic number.

212202551000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212202551000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288100800000).

212202551000 is an abundant number, since it is smaller than the sum of its proper divisors (363999049000).

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

212202551000 is a wasteful number, since it uses less digits than its factorization.

212202551000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5275 (or 5261 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

Adding to 212202551000 its reverse (155202212), we get a palindrome (212357753212).

The spelling of 212202551000 in words is "two hundred twelve billion, two hundred two million, five hundred fifty-one thousand".