212301157540 has 24 divisors (see below), whose sum is σ = 445902589440. Its totient is φ = 84907099488.

The previous prime is 212301157487. The next prime is 212301157571. The reversal of 212301157540 is 45751103212.

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, 704452 + ... + 959611.

It is an arithmetic number, because the mean of its divisors is an integer number (18579274560).

Almost surely, 2^212301157540 is an apocalyptic number.

212301157540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212301157540 is an abundant number, since it is smaller than the sum of its proper divisors (233601431900).

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

212301157540 is a wasteful number, since it uses less digits than its factorization.

212301157540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1670451 (or 1670449 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The spelling of 212301157540 in words is "two hundred twelve billion, three hundred one million, one hundred fifty-seven thousand, five hundred forty".