2151212020122 has 16 divisors (see below), whose sum is σ = 4693553498592. Its totient is φ = 651882430320.

The previous prime is 2151212020121. The next prime is 2151212020127. The reversal of 2151212020122 is 2210202121512.

It is a super-2 number, since 2×2151212020122² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2151212020121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16297060693 + ... + 16297060824.

It is an arithmetic number, because the mean of its divisors is an integer number (293347093662).

Almost surely, 2^{2151212020122} is an apocalyptic number.

2151212020122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2151212020122 is an abundant number, since it is smaller than the sum of its proper divisors (2542341478470).

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

2151212020122 is a wasteful number, since it uses less digits than its factorization.

2151212020122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32594121533.

The product of its (nonzero) digits is 320, while the sum is 21.

Adding to 2151212020122 its reverse (2210202121512), we get a palindrome (4361414141634).

The spelling of 2151212020122 in words is "two trillion, one hundred fifty-one billion, two hundred twelve million, twenty thousand, one hundred twenty-two".