751011211000021 has 16 divisors (see below), whose sum is σ = 802030476635136. Its totient is φ = 701644055688576.

The previous prime is 751011211000007. The next prime is 751011211000027. The reversal of 751011211000021 is 120000112110157.

It is a cyclic number.

It is not a de Polignac number, because 751011211000021 - 2²¹ = 751011208902869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 751011210999956 and 751011211000001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (751011211000027) 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, 1381091280 + ... + 1381634953.

It is an arithmetic number, because the mean of its divisors is an integer number (50126904789696).

Almost surely, 2^{751011211000021} is an apocalyptic number.

It is an amenable number.

751011211000021 is a deficient number, since it is larger than the sum of its proper divisors (51019265635115).

751011211000021 is a wasteful number, since it uses less digits than its factorization.

751011211000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2762726532.

The product of its (nonzero) digits is 140, while the sum is 22.

Adding to 751011211000021 its reverse (120000112110157), we get a palindrome (871011323110178).

The spelling of 751011211000021 in words is "seven hundred fifty-one trillion, eleven billion, two hundred eleven million, twenty-one", and thus it is an aban number.